If you have an unlocked bootloader, it can be pretty easy to brick your phone. If you wipe the wrong partitions, you can lose your EFS and your radio will no longer work.
To prevent against this, my suggestion is that everyone take and keep a backup. Here's how.
The EFS Partitions:
On the Mix 2S there are three partitions you should back up. modemst1, modemst2, and fsg.
modemst1 can be found at /dev/block/sdf6
modemst2 can be found at /dev/block/sdf7
fsg can be found at /dev/block/sde36
How to back them up
First, get into TWRP. TWRP and instructions for flashing it are here:
https://forum.xda-developers.com/xi...how-to-buy-unlock-root-twrp-recovery-t3786868
Once TWRP has loaded up, connect the USB cable from your phone to your computer, and, assuming you have installed ADB already, get an adb shell by going to command line and typing:
Code:
adb shell
From there, let's backup all three partitions
Code:
dd if=/dev/block/sdf6 of=/sdcard/sdf6.img
dd if=/dev/block/sdf7 of=/sdcard/sdf7.img
dd if=/dev/block/sde36 of=/sdcard/sde36.img
exit
Now, you can use adb to pull the files to your computer:
Code:
adb pull /sdcard/sdf6.img
adb pull /sdcard/sdf7.img
adb pull /sdcard/sde36.img
Keep these backups in a safe place!
Research regarding this
For those interesting in research in this, I have found the following:
• If you wipe modemst1, modemst2, and fsg your IMEI and all NV data on the modem is lost, and the radio does not work.
• You can make a backup with QPST and restore it, and it will restore your IMEI numbers, but the radio still will not work. This is something I'd like to get working very much.
• I am still trying to learn more about this, so if anyone would like to help, please send me backups of sdf6, sdf7, and sde36 of the Mi Mix 2S and let me know which spec you have. I think it may be possible to convert the limited LTE band version to the full LTE band version for example.
Thanks for starting this topic. It's really important to backup EFS...
The guide would be complete if someone really tried to backup and then restore with this method
underlines said:
Thanks for starting this topic. It's really important to backup EFS...
The guide would be complete if someone really tried to backup and then restore with this method
Click to expand...
Click to collapse
If OP doesn't mind, you could add a link to this thread on your Guide thread as well.
underlines said:
Thanks for starting this topic. It's really important to backup EFS...
The guide would be complete if someone really tried to backup and then restore with this method
Click to expand...
Click to collapse
I already did back up and restore with this method, several times. It works.
hi miuiers ;
EFS partitions backup not enough for some new models for restore QCN or EFS ..
therefore my advice for EFS backup using some box or dongle UMT , BST etc.
micro77 said:
hi miuiers ;
EFS partitions backup not enough for some new models for restore QCN or EFS ..
therefore my advice for EFS backup using some box or dongle UMT , BST etc.
Click to expand...
Click to collapse
They are not trying to edit or change the imei you wiseguy mikrop, no box needed if you have the brain, which you don't have
micro77 said:
hi miuiers ;
EFS partitions backup not enough for some new models for restore QCN or EFS ..
therefore my advice for EFS backup using some box or dongle UMT , BST etc.
Click to expand...
Click to collapse
I don't think there is anything a box does which QCN doesn't do. If it's in diag mode, all it can do is try to read the nv items and restore them.
As stated earlier, restoring the nv items directly from a QCN or otherwise in diag mode, you can't get the phone to connect to network after this. What would using a box make different about this? I don't think there are any boxes yet which support Mi Mix 2S, but if there are, let me know.
I've already experimented with some dongles (MRT for example), but I get same result as with QPST.
os_man said:
They are not trying to edit or change the imei you wiseguy mikrop, no box needed if you have the brain, which you don't have
Click to expand...
Click to collapse
hosht :/
what about oneplus or oppo ?
mister brain ?
READ AGAIN HERE ONE MORE TIME ;
@ duraaraa
"You can make a backup with QPST and restore it, and it will restore your IMEI numbers, "
"but the radio still will not work"
OR HERE;
"you can't get the phone to connect to network after this."
did you get it right now ?
---------- Post added at 01:45 AM ---------- Previous post was at 01:12 AM ----------
duraaraa said:
I don't think there is anything a box does which QCN doesn't do. If it's in diag mode, all it can do is try to read the nv items and restore them.
As stated earlier, restoring the nv items directly from a QCN or otherwise in diag mode, you can't get the phone to connect to network after this. What would using a box make different about this? I don't think there are any boxes yet which support Mi Mix 2S, but if there are, let me know.
I've already experimented with some dongles (MRT for example), but I get same result as with QPST.
Click to expand...
Click to collapse
yes you are right no box solution mix2s for now.
also qcn restore not enough for some new models.
but if you use box in EDL mode for backup EFS , sometimes only way for restore EFS , IMEI ,MEID etc.
its tested new model xiaomi phones.
micro77 said:
hosht :/
what about oneplus or oppo ?
mister brain ?
READ AGAIN HERE ONE MORE TIME ;
@ duraaraa
"You can make a backup with QPST and restore it, and it will restore your IMEI numbers, "
"but the radio still will not work"
OR HERE;
"you can't get the phone to connect to network after this."
did you get it right now ?
---------- Post added at 01:45 AM ---------- Previous post was at 01:12 AM ----------
yes you are right no box solution mix2s for now.
qcn restore not enough for some new models.
but if you use box in EDL mode for backup EFS , sometimes only way for restore EFS , IMEI ,MEID etc.
its tested new model xiaomi phones.
Click to expand...
Click to collapse
With unlocked bootloader, you can back up and restore efs by backing up and restoring fsg or modemst1 / modemst2 partition on Mix 2S. However if you do not have a backup of these partitions and yours end up wiped, there is no way to restore. This is what I'm hoping to solve.
duraaraa said:
With unlocked bootloader, you can back up and restore efs by backing up and restoring fsg or modemst1 / modemst2 partition on Mix 2S. However if you do not have a backup of these partitions and yours end up wiped, there is no way to restore. This is what I'm hoping to solve.
Click to expand...
Click to collapse
first dont need unlock for EFS backup or restore via box (easy way ) or coding ( little bit hard way ) .
just test point to phone for EDL and after you can backup or restore EFS , fsg or modemst1 / modemst2 partitions .
micro77 said:
first dont need unlock for EFS backup or restore via box (easy way ) or coding ( little bit hard way ) .
just test point to phone for EDL and after you can backup or restore EFS , fsg or modemst1 / modemst2 partitions .
Click to expand...
Click to collapse
I think maybe that's incorrect. It's not possible to enter EDL mode without unlocked bootloader. Also, with Mi Mix 2S, EDL mode seems to not work (for example MiFlash can't flash in EDL mode on it). But maybe I am wrong?
duraaraa said:
I think maybe that's incorrect. It's not possible to enter EDL mode without unlocked bootloader. Also, with Mi Mix 2S, EDL mode seems to not work (for example MiFlash can't flash in EDL mode on it). But maybe I am wrong?
Click to expand...
Click to collapse
no no you can enter EDL via test point , almost all snapdragon phones;
http://en.miui.com/thread-638042-1-1.html
micro77 said:
first dont need unlock for EFS backup or restore via box (easy way ) or coding ( little bit hard way ) .
just test point to phone for EDL and after you can backup or restore EFS , fsg or modemst1 / modemst2 partitions .
Click to expand...
Click to collapse
Ah, yes, that's right. I forgot about test point.
Still, there is no solution, as far as I know, unless you have a backup of the partitions when they are still valid.
Thanks so much I don't understand much and some terms are new to me but I much appreciate for the topic so I can at least save modem files.
Always learning.
So i got back up those partitions, by boot (not install) twrp v.8 through built in terminal and save it on /usb_otg.
Now if something happened with those partitions how to restore everything back?
Hi @duraaraa can u help me with my mix 2s. losts imei, baseband, network. but wifi, bluetooth is ok. can u edit those files with my imei number so i can restore using qpst or something? i can send it to u
duraaraa said:
I already did back up and restore with this method, several times. It works.
Click to expand...
Click to collapse
how to restore them plz? via recovorey or fastboot or else?
Same question how can we restore it ?
Related
Hey guys,
I decided to share my horrible experience - as title says - with lost IMEI.
Some of you may remember that couple of months ago there were some posts here regarding lost IMEI and possible solutions and questions how is it possible to loose IMEI in the first place.
I remember at least three guys managed to do that by running "fastboot erase all".
What was my story?
Yesterday I decided to flash a new recovery (last two months I haven´t flashed anything and wasn´t active on the forum because of lack of time and I started to show signs of withdrawal syndrome ). My first mistake was that I flashed non-gpe recovery to my device with GPE rom, obviously that couldn´t work because of incompatibility in file systems. Nevermind, that happened before and it´s easy to go back to a proper recovery. But not this time. Tried hundred times, but flashing with fastboot always ended up by "OKAY" but the old recovery remained in place for some reason unknown to me. And also the system wouldn´t boot. Out of desperation I ran "fastboot erase recovery", that wouldn´t help either. In the end I got out of the situation by booting (not flashing) to a proper recovery (fastboot boot recovery recovery.img) and restoring system from a nandroid backup. All seemed fine. ROM booted OK and then I realized I had no service and IMEI: unknown.
The only reason for that was obviously this unfortunate move: fastboot erase recovery. Anything else I did was pretty much "normal".
Here comes the second part of the story.
I downloaded my cloud-stored pds.img backup (lucky me I have it I thought to myself) but that didn´t prove to be of any use.
When running
Code:
adb shell
su
dd if=/sdcard/pds.img of=/dev/block/platform/msm_sdcc.1/by-name/pds
as seen on
http://forum.xda-developers.com/showthread.php?t=2537119
nothing happened. Dd ran too fast, just a fraction of a second and after reboot still IMEI: unknown.
To cut the long story short, after hours of searching for a possible solution (and thinking what would be my next phone) I finally came across this post:
http://forum.xda-developers.com/showpost.php?p=45881991&postcount=86
and tried that very easy method and it worked!
Takeaway messages:
1. don´t use fastboot erase "all" or "recovery" (other partitions may be erased without problems)
2. pds partition backup and restore method didn´t work for me
3. working solution (at least for me):
Remove sim, flash stock firmware using standard methods, boot to home screen, power off, insert sim, reboot and your IMEI should be back!
drfr said:
Hey guys,
I decided to share my horrible experience - as title says - with lost IMEI.
Some of you may remember that couple of months ago there were some posts here regarding lost IMEI and possible solutions and questions how is it possible to loose IMEI in the first place.
I remember at least three guys managed to do that by running "fastboot erase all".
What was my story?
Yesterday I decided to flash a new recovery (last two months I haven´t flashed anything and wasn´t active on the forum because of lack of time and I started to show signs of withdrawal syndrome ). My first mistake was that I flashed non-gpe recovery to my device with GPE rom, obviously that couldn´t work because of incompatibility in file systems. Nevermind, that happend before and it´s easy to go back to a proper recovery. But not this time. Tried hundred times, but flashing with fastboot always ended up by "OKAY" but the old recovery remained in place for some reason unknown to me. And also the system wouldn´t boot. Out of desperation I ran "fastboot erase recovery", that wouldn´t help either. In the end I got out of the situation by booting (not flashing) to a proper recovery (fastboot boot recovery recovery.img) and restoring system from a nandroid backup. All seemed fine. ROM booted OK and then I realised I have no service and IMEI: unknown.
The only reason for that was obviously this unfortunate move: fastboot erase recovery. Anything else I did was pretty much "normal".
Here comes the second part of the story.
I downloaded my cloud-stored pds.img backup (lucky me I have it I thought to myself) but that didn´t prove to be of any use.
When running
Code:
adb shell
su
dd if=/sdcard/pds.img of=/dev/block/platform/msm_sdcc.1/by-name/pds
as seen on
http://forum.xda-developers.com/showthread.php?t=2537119
nothing happend. Dd ran too fast, just a fraction of a second and after reboot still IMEI: unknown.
To cut the long story short, after hours of searching for a possible solution (and thinking what would be my next phone) I finally came across this post:
http://forum.xda-developers.com/showpost.php?p=45881991&postcount=86
and tried that very easy method and it worked!
Takeaway messsages:
1. don´t use fastboot erase "all" or "recovery" (other partitions may be erased without problems)
2. pds partition backup and restore method didn´t work for me
3. working solution (at least for me):
Remove sim, flash stock firmware using standard methods, boot to home screen, power off, insert sim, reboot and you´re IMEI should be back!
Click to expand...
Click to collapse
Is it possible?
Probably your pds partition was never corrupted! IMEI was there the whole time and ROM had some problems?
deej_roamer said:
Is it possible?
Probably your pds partition was never corrupted! IMEI was there the whole time and ROM had some problems?
Click to expand...
Click to collapse
Well, we don´t know what is happening exactly but we do know that a couple of people including me ran into problems after running fastboot erase all or fastboot erase recovery. I ´m describing here a method that could help the other guys or somebody else in the future.
drfr said:
Well, we don´t know what is happening exactly but we do know that a couple of people including me ran into problems after running fastboot erase all or fastboot erase recovery. I ´m describing here a method that could help the other guys or somebody else in the future.
Click to expand...
Click to collapse
Oh I am not criticising your work, I encourage it! I just pointed my point of view!
Added to FAQ (in the lost IMEI section), i also think that contrary to an erase all, the IMEI was not exactly lost but not readable by system (file system issue? misread cluster reading frame ? no idea) and that would explain the recover fail in the first place.
this is cool you could recover it by flashing stock, so i added your story to FAQ in case it happens again to anyone
Good to know.
matmutant said:
... i also think that contrary to an erase all, the IMEI was not exactly lost but not readable by system (file system issue? misread cluster reading frame ? no idea) and that would explain the recover fail in the first place.
Click to expand...
Click to collapse
Just adding some more information after searching through old threads.
I can see there were some little differences between my situation (loosing IMEI after fastboot erase recovery) and the situation of those guys who ran fastboot erase all.
In my case, I was getting IMEI unknown, they were getting IMEI 0. My baseband was also unknown, but their showed some number, but a wrong one.
There was one thing which we had in common though. We were able to see our correct IMEIs through fastboot getvar all, but not inside the ROM.
So Mat, you are obviously right in supposing that the IMEI was still stored SOMEWHERE only the system couldn´t read it, but not only in my case.
Hopefully the other guys will be able to find this thread and try my method.
drfr said:
Just adding some more information after searching through old threads.
I can see there were some little differences between my situation (loosing IMEI after fastboot erase recovery) and the situation of those guys who ran fastboot erase all.
In my case, I was getting IMEI unknown, they were getting IMEI 0. My baseband was also unknown, but their showed some number, but a wrong one.
There was one thing which we had in common though. We were able to see our correct IMEIs through fastboot getvar all, but not inside the ROM.
So Mat, you are obviously right in supposing that the IMEI was still stored SOMEWHERE only the system couldn´t read it, but not only in my case.
Hopefully the other guys will be able to find this thread and try my method.
Click to expand...
Click to collapse
Gonna try this if I can find some time, even if I don't realy got any hope left after flashing the hell out of this phone..
Didn't work. I used erase all back in the days..
RestlessScreams said:
Didn't work. I used erase all back in the days..
Click to expand...
Click to collapse
Same here, tried with 4.3 and 4.4 german (my phone is)
used erase all back in the days still can see imei on fastboot getvar, imei 0 on mobile.
Sorry guys, I don´t know of any other method yet, but if you can see IMEI through fastboot getvar there SHOULD be a chance.
What about this?
http://forum.xda-developers.com/showthread.php?t=1827089
drfr said:
Sorry guys, I don´t know of any other method yet, but if you can see IMEI through fastboot getvar there SHOULD be a chance.
What about this?
http://forum.xda-developers.com/showthread.php?t=1827089
Click to expand...
Click to collapse
thanks mate for your effort!
Sadly fastboot oem writeimei is unsupported in moto g
---------- Post added at 11:26 AM ---------- Previous post was at 11:12 AM ----------
drfr said:
Sorry guys, I don´t know of any other method yet, but if you can see IMEI through fastboot getvar there SHOULD be a chance.
What about this?
http://forum.xda-developers.com/showthread.php?t=1827089
Click to expand...
Click to collapse
about where is SHOULD be, when u do fastboot erase all it deletes those:
modemst1
modemst2
hob
dhob
fsg
fsc
clogo
I have the same problem here... do the comannd of the hell... erase all . IMEI is "0" if anyone solved that share please u.u
Lost IMEI
japoina92 said:
I have the same problem here... do the comannd of the hell... erase all . IMEI is "0" if anyone solved that share please u.u
Click to expand...
Click to collapse
The same situation... Can somebody share the pds folder? I assume that it contains imei.
ol_st said:
The same situation... Can somebody share the pds folder? I assume that it contains imei.
Click to expand...
Click to collapse
i've tried edit the pds.img file from other Moto G XT1032, edit with hex workshop, find the line for imei number and edit with my imei ( back in battery ) flash the pds.img with flashable zip in respective partition and no good news... the imei remain in IMEI = 0 :S
recover imei moto g
japoina92 said:
i've tried edit the pds.img file from other Moto G XT1032, edit with hex workshop, find the line for imei number and edit with my imei ( back in battery ) flash the pds.img with flashable zip in respective partition and no good news... the imei remain in IMEI = 0 :S
Click to expand...
Click to collapse
Hi friend, how did you get flash pds.img into a .zip file, please guide me about the way, thanks in advance
BUMP: any news on this guys?
Nothing..
killerBRs said:
Nothing..
Click to expand...
Click to collapse
japoina92 said:
i've tried edit the pds.img file from other Moto G XT1032, edit with hex workshop, find the line for imei number and edit with my imei ( back in battery ) flash the pds.img with flashable zip in respective partition and no good news... the imei remain in IMEI = 0 :S
Click to expand...
Click to collapse
Younboy69 said:
Hi friend, how did you get flash pds.img into a .zip file, please guide me about the way, thanks in advance
Click to expand...
Click to collapse
tehygav said:
BUMP: any news on this guys?
Click to expand...
Click to collapse
What if we try @japoina92 method, having a new pds.img and restoring it via adb?
@japoina92 can you explain me how to use the hex workshop?
moto
sebastiandg7 said:
What if we try @japoina92 method, having a new pds.img and restoring it via adb?
@japoina92 can you explain me how to use the hex workshop?
Click to expand...
Click to collapse
tengo un moto g hay alguna forma de restaurar imei alguna box que se dedique al cambio de imei?
I have already tried this guide (great info there):
http://forum.xda-developers.com/one...fs-corrupt-t2879061/post55488755#post55488755
Unfortunately, it didn't quite work out for me. The issue I have been having is that the phone reports unknown baseband version and there is no IMEI. Wifi was still working originally. The issues came after I flashed the latest lollipop alpha modem needed for the latest CM12 build/kernel.
After I experienced the issue, I flashed back the 44s modem. Then Wifi was also gone.
As of right now, the best I can do is:
1. Install ColorOS 2.0.0
2. OTA to ColorOS 2.0.4
ColorOS gave me Wifi back.
At this point, I tried to fastboot install TWRP per @NikoZBK suggested. The fastboot command reported successful but it still got the ColorOS recovery. So I have to...
3. Fastboot flash 30o with flash-all.bat
However, by doing so, my Wifi is gone and I still have unknown baseband version and IMEI. Therefore, I went back to (1) and (2), took out this line: fastboot flash modem NON-HLOS.bin in flash-all.bat and run flash-all.bat again.
At this point, Wifi is still working but I still have unknown baseband version and IMEI.
4. Flash pre-rooted 44s in TWRP. The issues are still there.
I also tried doing "make_ext4fs /dev/block/mmcblk0p15" in TWRP and it actually killed Wifi. I am running out of ideas. Any advice is appreciated. Thanks!
radium22 said:
I have already tried this guide (great info there):
http://forum.xda-developers.com/one...fs-corrupt-t2879061/post55488755#post55488755
Unfortunately, it didn't quite work out for me. The issue I have been having is that the phone reports unknown baseband version and there is no IMEI. Wifi was still working originally. The issues came after I flashed the latest lollipop alpha modem needed for the latest CM12 build/kernel.
After I experienced the issue, I flashed back the 44s modem. Then Wifi was also gone.
As of right now, the best I can do is:
1. Install ColorOS 2.0.0
2. OTA to ColorOS 2.0.4
ColorOS gave me Wifi back.
At this point, I tried to fastboot install TWRP per @NikoZBK suggested. The fastboot command reported successful but it still got the ColorOS recovery. So I have to...
3. Fastboot flash 30o with flash-all.bat
However, by doing so, my Wifi is gone and I still have unknown baseband version and IMEI. Therefore, I went back to (1) and (2), took out this line: fastboot flash modem NON-HLOS.bin in flash-all.bat and run flash-all.bat again.
At this point, Wifi is still working but I still have unknown baseband version and IMEI.
4. Flash pre-rooted 44s in TWRP. The issues are still there.
I also tried doing "make_ext4fs /dev/block/mmcblk0p15" in TWRP and it actually killed Wifi. I am running out of ideas. Any advice is appreciated. Thanks!
Click to expand...
Click to collapse
Give this thread a look:http://forum.xda-developers.com/oneplus-one/help/opo-efs-t2821020. Look at page 9 and post 83. I don't know if it will help with your problem, but it fixed mine a few months back.
elrey311 said:
Give this thread a look:http://forum.xda-developers.com/oneplus-one/help/opo-efs-t2821020. Look at page 9 and post 83. I don't know if it will help with your problem, but it fixed mine a few months back.
Click to expand...
Click to collapse
Thanks for the info. I tried that but didn't work out for me unfortunately.
Finally, the issue is fixed!!! Here is what I have done:
1. fastboot flash 22R
2. reboot (No Wifi, No IMEI, Unknown Baseband version)
3. fastboot flash TWRP
4. reboot (Still No Wifi, No IMEI, Unknown Baseband version)
5. Download and copy OnePlus ColorV2.0.4i Beta Native.zip to internal
6. reboot to TWRP and flash OnePlus ColorV2.0.4i Beta Native.zip
7. reboot
8. Wifi, IMEI, mobile data, and baseband version are BACK!
radium22 said:
Finally, the issue is fixed!!! Here is what I have done:
1. fastboot flash 22R
2. reboot (No Wifi, No IMEI, Unknown Baseband version)
3. fastboot flash TWRP
4. reboot (Still No Wifi, No IMEI, Unknown Baseband version)
5. Download and copy OnePlus ColorV2.0.4i Beta Native.zip to internal
6. reboot to TWRP and flash OnePlus ColorV2.0.4i Beta Native.zip
7. reboot
8. Wifi, IMEI, mobile data, and baseband version are BACK!
Click to expand...
Click to collapse
Where did you find this 'OnePlus ColorV2.0.4i Beta Native.zip' file?
Vleiss said:
Where did you find this 'OnePlus ColorV2.0.4i Beta Native.zip' file?
Click to expand...
Click to collapse
can u pls share this file if u find it..?
OnePlus ColorV2.0.4i Beta Native.zip
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
rombdeta said:
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
Click to expand...
Click to collapse
I think its illegal to share these kind of information. I might be wrong though.
I know that you will not clone the IMEI but its against the rules to share this info.
Someone will be able to help you, I guess!!!
rombdeta said:
I tried all methods, delete modemst1 and modemst2. Flash coloros manually, write imei with QPST (With this method regained imei but no signal and information is provided "radio off" and I can not find networks manually. I tried almost everything and can not get anything, just wi-fi. Someone having a backup of efs ?? or qcn?? , if you do not want to share the imei, blur the line 550, i need a backup of a running device., I will not clone or anything, I just need to repair my data qcn as there are 6468 and only have 5 lines with values.
Click to expand...
Click to collapse
Shankar9822 said:
I think its illegal to share these kind of information. I might be wrong though.
I know that you will not clone the IMEI but its against the rules to share this info.
Someone will be able to help you, I guess!!!
Click to expand...
Click to collapse
Hi, @rombdeta, unfortunately for you @Shankar9822 is right, nobody can share their EFS backup with you. It's up to each user to backup their own EFS partition for safekeeping, this information is readily available all over this device section on XDA and on the OnePlus forums.
Transmitted via Bacon
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
After 10 days without the phone, and read about QCN in many sites and much info, i repair my device. For anyone who has tried all possible solutions, to no avail, they sent me a message, I will gladly help you. But I can't open a guide as I have understood, so this is the only solution I can currently provide. Thanks everyone. Greetings To You!
rombdeta said:
After 10 days without the phone, and read about QCN in many sites and much info, i repair my device. For anyone who has tried all possible solutions, to no avail, they sent me a message, I will gladly help you. But I can't open a guide as I have understood, so this is the only solution I can currently provide. Thanks everyone. Greetings To You!
Click to expand...
Click to collapse
If you're going to help people please don't do it via PM, do it here in the forums, solutions don't benefit the community when they're hidden away in an inbox.
Transmitted via Bacon
Ok, i will make a guide. OnePlus people told me they have no redress for the device, so I started reading and researching and with the help of many people, I put together a QCN with valid values, hand made in RF NV Item Manager. Therefore sought an original QCN. Tomorrow i will make a full guide. Regards and sorry about my english.
Thanks, good idea.
PS. There's nothing wrong with your English.
rombdeta said:
Ok, i will make a guide. OnePlus people told me they have no redress for the device, so I started reading and researching and with the help of many people, I put together a QCN with valid values, hand made in RF NV Item Manager. Therefore sought an original QCN. Tomorrow i will make a full guide. Regards and sorry about my english.
Click to expand...
Click to collapse
Do you have 2g (gsm only) and 3g/2g auto mode ? ( you probably dont need 2g but some do).
rombdeta said:
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
Click to expand...
Click to collapse
Hi, I have restored with QCN and edited now I have my IMEI and Baseband but the signal is 0 dbm 99 asu
I've tried to flash again the modem, change rom but nothing as changed... How do you have solved?
Yeah I haven't been able to get any service on my phone for awhile now it's been nothing but frustrating... Nothing I do seems to work I've on the verge of just throwing this phone against the wall a few times
Sent from my D6503 using XDA Free mobile app
No Wifi/networ/imei working
rombdeta said:
Okay, you are right, i understend. But QCN, is different, have a parameters of the network. Is only that i need, because i have repaired imxx, wifi, bluetooth, but in the radio signal i have 0 dbm 99 asu, because i haven't the radio band who is in the QCN, and the information on this. If i can repair that, i will make a guide to recover imei without a EFS backup, so please help me with the QCN. Best regards.
Click to expand...
Click to collapse
Hello,
Can you please help me with this.
My phone showing unknown baseband version.
Hello guys my efs partion is corrupted ad my IMEI number is not showing. How can I restore my IMEI
biku123 said:
Hello guys my efs partion is corrupted ad my IMEI number is not showing. How can I restore my IMEI
Click to expand...
Click to collapse
Unless you made a efs backup, you are SOL. only oneplus can help out.
Did you make a backup of modem1 and modem2?
Try to use Msmdownloadtool first
Aoitoori_Android said:
Try to use Msmdownloadtool first
Click to expand...
Click to collapse
WON'T work. No img we get our hands on will ever fix efs. the efs partition is unique to every android phone. Know two efs is the same.
Ouch ! OnePlus support is your last hope.. I'm sure they can fix it. Don't forget to back your IMEI next time, & store it under your bed & on the cloud.
9 out of 10 people. should do the six P's (Proper planning prevents piss poor performance.)
How to backup IMEI?
nitinvaid said:
How to backup IMEI?
Click to expand...
Click to collapse
in twrp, backup, check all done or just efs stuff done. store in safe place
efs backup is the first thing everyone should do when you mod or flash roms.
try this if it help : https://forum.xda-developers.com/oneplus-3/how-to/fix-empty-imei-unknown-baseband-sim-t3480781
MrSteelX said:
Unless you made a efs backup, you are SOL. only oneplus can help out.
Click to expand...
Click to collapse
no backup
daleski75 said:
Did you make a backup of modem1 and modem2?
Click to expand...
Click to collapse
no backup
biku123 said:
no backup
Click to expand...
Click to collapse
There are ways of getting it back but it's incredibly tricky with a risk that you'll totally brick the phone which cannot be restored and there is no guarantee that it would even work on this phone.
I AM NOT RESPONSIBLE FOR ANY DAMAGE YOU DO TO THE PHONE WHEN TRYING TO FIX YOUR IMEI AND YOU TAKE FULL RESPONSIBILITY FOR YOUR ACTIONS.
Try this first.
I found a way, you need to have "EFS PROFESSIONAL" its free! https://forum.xda-developers.com/ga...ol-updated-09-06-14-efs-professional-t1308546
1. flash combination files.
2. in IMEI option type +#0808# select DM+MODEM+ADB then leave the modem option showing next, then restart phone.
3. open EFS Professional, select Qualcom option, then your phone should show on com ports, then tap connect, Secure OPs, tap send password and the imei should show, right there you can change it or restore it from the original. tap write to phone. disconect and then turn phone off.
4. check imei +#06#
https://www.digitbin.com/restore-lost-imei-number-android/
https://forum.xda-developers.com/android/general/how-to-restore-lost-imei-t2936696
biku123 said:
Hello guys my efs partion is corrupted ad my IMEI number is not showing. How can I restore my IMEI
Click to expand...
Click to collapse
Restore any version from this fastboot flashable ROM they will restore al your partition along with efs.
Just only use 'flash all' bat command
https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665
daleski75 said:
There are ways of getting it back but it's incredibly tricky with a risk that you'll totally brick the phone which cannot be restored and there is no guarantee that it would even work on this phone.
I AM NOT RESPONSIBLE FOR ANY DAMAGE YOU DO TO THE PHONE WHEN TRYING TO FIX YOUR IMEI AND YOU TAKE FULL RESPONSIBILITY FOR YOUR ACTIONS.
Try this first.
I found a way, you need to have "EFS PROFESSIONAL" its free! https://forum.xda-developers.com/ga...ol-updated-09-06-14-efs-professional-t1308546
1. flash combination files.
2. in IMEI option type +#0808# select DM+MODEM+ADB then leave the modem option showing next, then restart phone.
3. open EFS Professional, select Qualcom option, then your phone should show on com ports, then tap connect, Secure OPs, tap send password and the imei should show, right there you can change it or restore it from the original. tap write to phone. disconect and then turn phone off.
4. check imei +#06#
https://www.digitbin.com/restore-lost-imei-number-android/
https://forum.xda-developers.com/android/general/how-to-restore-lost-imei-t2936696
Click to expand...
Click to collapse
Will it work on oneplus 6t my imei is showing 0.
w69 said:
Will it work on oneplus 6t my imei is showing 0.
Click to expand...
Click to collapse
Did it work?
MrSteelX said:
in twrp, backup, check all done or just efs stuff done. store in safe place
Click to expand...
Click to collapse
Everyone has always asked why I check all the boxes...
MistRee said:
Did it work?
Click to expand...
Click to collapse
No. But fixed it with umt dongle.
I have a question guys. Do I need both or just the efs Partition?
UPDATE: So hopefully this title and OP update take as I don't want to spam the forum with threads. Despite have dozens of Android phones since the original G1 I am stumped by this, but I imagine a guru could solve this puzzle. Here we go:
I messed up my phone partition table when I messed up the last step from the dual boot TWRP thread. I tried fixing my newly bricked phone using MSM tools but it's a converted GM1915 Tmobile OP7P running global firmware. The Tmobile stock MSM recovery pack MEGA link has gone dead, so I tried the Tmo to Int'l conversion files again. The phone booted, but I kept getting "NV Backup warning - dynamiic partition is invalid". I could make calls, but had no orientation sensor, no mobile data, baseband shows blank in fastboot mode, etc. I've tried flashing fastboot ROMs as well but no matter what, the dynamic partition invalid message pops up.
It seems ike this is an EFS issue, so late last night I tried a few more things. IIRC, I was able to flash that persist.img via "fastboot flash persist persist.img", and in any case most everything seems to work now, including the sensors. But, I'm still getting that dynamic partition invalid error and no baseband shows on my bootloader screen. I
'm guessing there's still some corruption in EFS? I'd understood from reading that even with persist.img one good thing was to erase the modem files and persist first, because then they will regenerate, according to this post.
So, I tried these commands with plans to then flash persist.img again....
fastboot erase modemst1
fastboot erase modemst2
fastboot erase persist
It won't let me erase them though, as it says the critical partitions are locked. Do you think this path might fix whatever issue is triggering this message, and if so, does anyone know how to do it? I think I may have use dd, but I'm not sure which partitions I'll be looking to erase and how to do it that way, either.
Maybe try this: https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424
¿GotJazz? said:
Maybe try this: https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424
Click to expand...
Click to collapse
Thanks, but that's what I've been trying. No joy so far. I need to check because actually it may have hung on params or some other issue that an L2 driver update could fix. Of course me figuring out how to fix that will be the next feat, LOL.
Updated thread title and OP with new info. Phone almost back to 100%, but still getting an error message.
So another update as I learn. Now that I've gotten TWRP and Magisk back on it, I realized there is another odd thing with the phone now. Just before the bootloader unlocked warning screen, for a fraction of a second there's a message that says SMT Download Failed. More reading seems to suggest that using an SMT recovery in conjunction with MSM tool can fix the SMT Download Failed message. Most of these say you need to have an EFS backup, which some suggest that you can wipe EFS (as indicated in OP) and it will regenerate.
I've taken a TWRP backup of EFS, but I'm not sure whether I should proceed with the wipe processes with so many saying you should have an EFS backup (lesson learned, yes you should - and don't delete/misplace it like I did). Anyway, I'm wondering if going through that process might resolve that, as it could be a flag that didn't get set right, or whether or not there's some issue with my EFS that means my backup from the current state is worthless.
Maybe my EFS isn't corrupt after all, maybe it was the persist.img that needed to fix the sensores and now I'm good except for some flag that's triggering the SMT Download Failed message and the subesquent dynamic partition invalid message?
Maybe you could do that on twrp by terminal commands, some fastboot command dont work on Bootloader but in twrp work
yulian6766 said:
Maybe you could do that on twrp by terminal commands, some fastboot command dont work on Bootloader but in twrp work
Click to expand...
Click to collapse
That's actually an idea I was kicking around for my next move. I was hoping that before I do that, though, I could get a sense from one of the gurus as to whether I'll be able to recover my IMEI and such afterwards.
vettejock99 said:
That's actually an idea I was kicking around for my next move. I was hoping that before I do that, though, I could get a sense from one of the gurus as to whether I'll be able to recover my IMEI and such afterwards.
Click to expand...
Click to collapse
Your problem is recover your IMEI?
yulian6766 said:
Your problem is recover your IMEI?
Click to expand...
Click to collapse
The phone shows IMEI right now, and calls and mobile data work, so except for the weird " SMT download failed!!! please check your download flow is right" message at boot start and the NV Backup UI warning Dynamic partiton invalid messages the phone otherwise seems just fine. I'm pretty comfortable with system, boot, and data partition stuff from all my time at this, but I'm just being extra cautious that by erasing my modems via some sort of commands or SMT flash that I can at least get it back to where it is now even if I can't get back to an error-free state.
Have you tried flashing QCN file?
yulian6766 said:
Have you tried flashing QCN file?
Click to expand...
Click to collapse
I had heard about and used QPST before, but QCN is new to me. I did a quick search and it sounds like on some phones like ASUS ROG, you REALLY need to have one to recover from erasing your modems. Oneplus phones recreate those if they are erased, don't they?
Create a QCN backup from QPST of your phone and flash it again, maybe that will fix your problem.
Hey man I know I posted the other one up with the issue too but thanks for this after seeing you flashing the persist fixed your sensors I tried and walla they are good now! I still have the same SMT failed and NV Backup warning but at least the phone can auto rotate.
Velrix said:
Hey man I know I posted the other one up with the issue too but thanks for this after seeing you flashing the persist fixed your sensors I tried and walla they are good now! I still have the same SMT failed and NV Backup warning but at least the phone can auto rotate.
Click to expand...
Click to collapse
Good stuff. I'll definitely post a resolution here if I get it all. Just glad to have the phone working again for sure!
yulian6766 said:
Create a QCN backup from QPST of your phone and flash it again, maybe that will fix your problem.
Click to expand...
Click to collapse
I went and installed QPST again and I can get it to see the phone in EDL mode, but I don't believe I have the drivers to get it into diagostnic mode. If I try it shows GM1915 with unknown USB drivers, but I've downloaded some and they don't seem to be able to get the device recognized properly. Until I figure that out, I can't pull QCN, I don't think.
I did go ahead and try a SMT flash. Unfortunately, while I've gotten it to start, it ultimately gets to "Param preload" then I see the Status of Connection change to N/A and then it just hangs....grrrr...
vettejock99 said:
I went and installed QPST again and I can get it to see the phone in EDL mode, but I don't believe I have the drivers to get it into diagostnic mode. If I try it shows GM1915 with unknown USB drivers, but I've downloaded some and they don't seem to be able to get the device recognized properly. Until I figure that out, I can't pull QCN, I don't think.
Click to expand...
Click to collapse
You have to install the right drivers
https://forum.xda-developers.com/rog-phone-2/how-to/guide-restoring-imei-efs-erasing-t4071159
This drivers should work for me
yulian6766 said:
You have to install the right drivers
https://forum.xda-developers.com/rog-phone-2/how-to/guide-restoring-imei-efs-erasing-t4071159
This drivers should work for me
Click to expand...
Click to collapse
That's the one I was using. Just downloaded and compared the hashes. Now that I think about it, I chose WWAN-DHCP mode. Should I have chosen ETHERNET-DHCP?
vettejock99 said:
That's the one I was using. Just downloaded and compared the hashes. Now that I think about it, I chose WWAN-DHCP mode. Should I have chosen ETHERNET-DHCP?
Click to expand...
Click to collapse
I choose the same option
yulian6766 said:
I choose the same option
Click to expand...
Click to collapse
So if we're both choosing WWAN-DHCP for the driver mode, I'm not sure why it wouldn't work. Right now everything is working and I told the NV Backup UI notification to Never Show so it will probably be a few days before I get around to trying to get the whole thing to flash properly. My OCD is really the only thing that would drive me to do it
I think I messed up my phone, after do the "dd zero" command to the modemst1 modemst2 and fsg partitions the mobile signal dont work, but I made a QCN backup before do that, because I think that solve if anything goes wrong, so I did it. After that a tried to restore QCN backup but the still dont work.
My fault was not to make a backup of the partitions using dd command, I also try to resolve this using MSM tool but dont, so anybody has a solution to this?
Thanks in advanced.
yulian6766 said:
I think I messed up my phone, after do the "dd zero" command to the modemst1 modemst2 and fsg partitions the mobile signal dont work, but I made a QCN backup before do that, because I think that solve if anything goes wrong, so I did it. After that a tried to restore QCN backup but the still dont work.
My fault was not to make a backup of the partitions using dd command, I also try to resolve this using MSM tool but dont, so anybody has a solution to this?
Thanks in advanced.
Click to expand...
Click to collapse
You mean you did
dd if=/dev/zero of=/dev/block/bootdevice/whatever
To your imei partitions?
I'm sorry but if you did that you need to contact oneplus and get a motherboard replacement. No one can help you
If you're feeling experimental you can try putting the phone into diag mode and restore imei however it is way difficult to do so than it sounds and you might cause even more damage
If you want to go the diag way google is your friend however some features like widevine, WiFi, Bluetooth might not work unless you can get a mac address for those
anupritaisno1 said:
You mean you did
dd if=/dev/zero of=/dev/block/bootdevice/whatever
To your imei partitions?
I'm sorry but if you did that you need to contact oneplus and get a motherboard replacement. No one can help you
If you're feeling experimental you can try putting the phone into diag mode and restore imei however it is way difficult to do so than it sounds and you might cause even more damage
If you want to go the diag way google is your friend however some features like widevine, WiFi, Bluetooth might not work unless you can get a mac address for those
Click to expand...
Click to collapse
Thanks for your answer, but the imeis are still there, I dont get any invalid imei error or null error.
yulian6766 said:
Thanks for your answer, but the imeis are still there, I dont get any invalid imei error or null error.
Click to expand...
Click to collapse
Maybe is dumb question but do you try fuul install off os firmware?
Sent from my GM1910 using Tapatalk
Geto-Fraer said:
Maybe is dumb question but do you try fuul install off os firmware?
Sent from my GM1910 using Tapatalk
Click to expand...
Click to collapse
I use MSM Tool, various upgrade packages and dont work, that methods dont touch EFS partitions
Someone could help me with a .img backup of this partitions? modemst1 modemst2 and fsg.