Unable to unlock the bootloader - OnePlus 7 Pro Questions & Answers

I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?

Karellen11 said:
I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?
Click to expand...
Click to collapse
Yes you can ,,install thru boot loader with ADB and fastboot CMD. First you need to extract the boot.img from your oos rom, patch it in magisk app, then put it in your adb folder and run the cmd " fastboot flash boot boot.img .

Related

HELP: Stuck on Bootloop- BRICKED?

Ok so, this isn't my first time flashing and returning to stock with phones, just the worst. Any help is appreciated.
I unlocked the bootloader, installed TWRP and tried to flash a few ROMS which were not working great so I went to go back to stock and then the **** show happened. Its the LO4 Model. I flashed stock recovery, Relocked the bootloader and tried the Force Flash Update method. Well now the phone is stuck in a boot loop(Cant power it down), cant boot to erecovery/ recovery -- I can get to fast boot mode but the FRP is locked so I can not do anything all commands fail with an error.
Any thoughts? I just need to get it back to stock OR a working ROM- I plan on selling this phone and My wife (it was her phone) has upgraded to a Galaxy S9. If I cant get it to work, I will post it on swappa as is for a cheap price
Thanks!
Same Issue
I did the same thing, however when in fastboot type fastboot oem unlock (put the code here) and this will unlock your bootloader. I did this I even managed to flash the stock system cust recovery and boot, but it doesnt boot into recovory, erecover, or even download mode to download the software from the sd card. Any ideas?
I tried that fastboot code and I get an error because of the FRP lock

My phone keeps on booting to fastboot

Hi all. Need urgent help here. I tried flashing my phone following everything on one post i found for flashing(androidbiits[dot]com/root-oppo-realme-5-rmx1911-easily/). But something went wrong(I don't know what went wrong, I just followed everything step by step). My phone suddenly keeps on booting to fastboot mode. I tried entering recovery mode but it boots to fastboot mode instead. Need help
PS. I tried to reflash my phone with rmx1911 stock rom. But I noticed my device state is locked. I can't somehow unlock it with fastboot(fastboot flashing unlock). A bootloader unlock prompt appears on my phone and when I choose to unlock the bootloader, my phone just reboots back to fastboot mode with the device state still locked
Use msm tool and ofp file for realme 5 ..you have to flash whole rom again..and it can be flashed in phone state locked too
Give the following commands :
$ fastboot flashing unlock
Then flash TWRP
Then flash stock ROM by renaming .ozip to .zip via TWRP.
mine too ... is there anything I can fix
mine too ... is there anything I can fix
joniyesnoppa said:
mine too ... is there anything I can fix
Click to expand...
Click to collapse
Flash this file use command-
fastboot flash vbmeta vbmeta.img
---------- Post added at 08:24 PM ---------- Previous post was at 08:20 PM ----------
sumeetsk2 said:
Flash this file use command-
fastboot flash vbmeta vbmeta.img
Click to expand...
Click to collapse
bit.ly/383BPIp
Download and Flash this files
how do I enable fast charging 3.0 because charging defaults only to 1.4a even though redmi 3s can only 1.9ampere
Cant flash vbmeta.img ... Anyone? Help
limilnate1 said:
Hi all. Need urgent help here. I tried flashing my phone following everything on one post i found for flashing(androidbiits[dot]com/root-oppo-realme-5-rmx1911-easily/). But something went wrong(I don't know what went wrong, I just followed everything step by step). My phone suddenly keeps on booting to fastboot mode. I tried entering recovery mode but it boots to fastboot mode instead. Need help
PS. I tried to reflash my phone with rmx1911 stock rom. But I noticed my device state is locked. I can't somehow unlock it with fastboot(fastboot flashing unlock). A bootloader unlock prompt appears on my phone and when I choose to unlock the bootloader, my phone just reboots back to fastboot mode with the device state still locked
Click to expand...
Click to collapse
Mine to have the same issue....i think you should visit nearest realme service center for flashing stock rom
The Phone is unable to flash vbmeta beacuse the phone is in locked condition
There only one way "FLASH STOCK ROM"
Contact me +923358048675 whatsapp 100% remote service
limilnate1 said:
Hi all. Need urgent help here. I tried flashing my phone following everything on one post i found for flashing(androidbiits[dot]com/root-oppo-realme-5-rmx1911-easily/). But something went wrong(I don't know what went wrong, I just followed everything step by step). My phone suddenly keeps on booting to fastboot mode. I tried entering recovery mode but it boots to fastboot mode instead. Need help
PS. I tried to reflash my phone with rmx1911 stock rom. But I noticed my device state is locked. I can't somehow unlock it with fastboot(fastboot flashing unlock). A bootloader unlock prompt appears on my phone and when I choose to unlock the bootloader, my phone just reboots back to fastboot mode with the device state still locked
Click to expand...
Click to collapse
..
Realme has just release its flashtool to flash there ofp firmware through fastboot. Just try it. and post result.
Note: This require bootloader to unlock
Flashtool Link:
https://download.c.realme.com/flash/Flash_tool/realme_Flash_Tool.zip
Firmware Link:
https://combinefile.com/index.php?a=downloads&b=file&c=download&id=42977
not flashing
my realme 5 stuck in fastboot mode and bootloader is lock and vbmeta image want bootloader unlock
plz plz help me
stay home and staysafe friends

How to Remove Warning Bootloader Unlocked Message

Recently rooted my new Zenfone 7. Is it possible to remove Bootloader unlocked Warning message at the start up of the system? Thanks for an answer.
re-lock the bootloader
Boot into fastboot, then send this command from your pc.
fastboot oem asus-lock
how did you get root to work? I followed the instructions listed and it would not work for me.
I followed the instructions there: https://forum.xda-developers.com/t/recovery-official-twrp-for-asus-zenfone-7-series.4161719/ in fastboot mode you should update android drivers manually through device manager to get it work otherwise you'll get " waiting on device " error and it won't flash TWRP.
Is it possible to remove Bootloader unlocked warning without re-locking device though?
Jkm15 said:
I followed the instructions there: https://forum.xda-developers.com/t/recovery-official-twrp-for-asus-zenfone-7-series.4161719/ in fastboot mode you should update android drivers manually through device manager to get it work otherwise you'll get " waiting on device " error and it won't flash TWRP.
Click to expand...
Click to collapse
Getting TWRP on and working was fine. It was when I went and tried to flash Magisk that it kept causing a bootloop.
Jkm15 said:
Is it possible to remove Bootloader unlocked warning without re-locking device though?
Click to expand...
Click to collapse
Why? Unless you plan on overwriting TWRP, there is no benefit to having it unlocked all the time. TWRP will still work after it is re-locked. and you can unlock it again via the app anytime you need to update.
Joeb2000 said:
Getting TWRP on and working was fine. It was when I went and tried to flash Magisk that it kept causing a bootloop.
Why? Unless you plan on overwriting TWRP, there is no benefit to having it unlocked all the time. TWRP will still work after it is re-locked. and you can unlock it again via the app anytime you need to update.
Click to expand...
Click to collapse
Had locked bootloader on device with magisk. Result is fastboot loop =|
Same wish here. that warning screen is ugly....

relock bootloader but no OS help please

hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
in case anyone has the same problem.
i did solve it by flashing the (raw) firmware via fastboot ( Flash_AFT method )
M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
There are new guides on how to get volte if you want to try again.
[Guide] Easy method to Enable Volte (with root) on Tmobile and maybe other networks on Android 11 and maybe 10
So first you have to root. I used twrp and magisk. There are guides on how to do that you can find by searching around. Then once you do that, follow these directions, What I did was manually entered all of these setprop commands below, on the...
forum.xda-developers.com
This is one but there are others if you need the help.
After relock bootloader i can send phone to warranty?
I tried to relock the phone with the command "fastboot oem asus-lock", but it shows "waitting for any device" and my phone just sit there and do nothing..
Any other method to relock the Zenfone 7 pro?
M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
I believe that relock is impossible and but to make the device recovery to installed status of stock rom keeping with unlock bootloader.
Please see my post. May make it help or not.
When I try to burn rom with TWRP, img burns but it doesn't start and zip gives an error and cannot burn.
When I first burned custom ROM (unofficial AEX), it did not start, so when I deleted the data from TWRP, it seems that I deleted things that should not be erased, so even if I burn it from the zip file, with the error message in the image below I...
forum.xda-developers.com

Oneplus 8 stuck in fastboot mode after trying to downgrade from A12

I was on A12 beta1, so I decided to go back to older firmware, I unlocked my bootloader and wanted to flash fastboot rom. When I tried it it says "Flashing not allowed for Critical partition" and when I try command:
fastboot flashing unlock_critical
It says failed, device already unlocked.
So I gave up and wanted to try MSM Tool, downloaded it and after literally 2hrs of looking for a proper driver somehow got it to work and see my device in EDL mode, but when I start flash it says "Param Preload Fails".
I have no idea what should I try next, tried everything in past 3/4 hours.
Device stuck in Fastboot mode, no booting, bootloader unlocked, any suggestions are welcome..

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