Unable to boot - stuck in boot animation - OnePlus 6T Questions & Answers

Hello guys,
I've bought very cheap a oneplus 6T, the seller mentioned that he got stuck in the boot animation after updating to android 10.
What I tried to do to unbrick the phone was to use the MSMTool for OOS 10.3.5. After using the flash tool, I'm still unable to boot. Nothing changed.
Bootloader is locked, wasn't able to unlock it via fastboot OEM unlock.
You help is thankfully needed, what could I try else?
Best regards, Tobias

I would try using the first msm tool for your model and verify if its a T-Mobile model as those have their own msm tool. Best of luck!

Related

A2017G How to relock bootloader on Nougat B10

I came back from LOS 16.0. Flashed A2017G_B10_NOUGAT_FULL_EDL in EDL but there's a warning that my bootloader is locked. I wanted to relock it but the warning prevents me from entering bootloader or fastboot (or maybe they are not even present....). Next I flashed A2017U_FASTBOOT_UNLOCK_EDL in MiFlash but it did not do anything. It flashed OK but I still cannot access fastboot. Should I flash some marshmallow rom? Thanks in advance.
I have the same problem. Cannot enter fastboot mode on Nougat ROM.
Ok I found the way usin Axon 7 Toolkit
1. Set the Android version to 7 using option 13
2. Perform unlock bootloader
Following instruction Axon & Tookit gives you EDL image of the proper fastboot partition giving the possibility to enter fastboot mode
then fasboot oem lock
I wanted to say thanks that works, but apparently my phone is bricked now - it hangs on green ZTE logo. PC recognizes it as DFU. Cannot enter EDL either. I guess I look for some guide how to recover from this situation
Managed to fix that. Somehow I was able to enter fastboot. It said my bootloader was locked so i flashed TWRP and from TWRP using ADB installed stock Nougat rom
ma_ko said:
I wanted to say thanks that works, but apparently my phone is bricked now - it hangs on green ZTE logo. PC recognizes it as DFU. Cannot enter EDL either. I guess I look for some guide how to recover from this situation
Managed to fix that. Somehow I was able to enter fastboot. It said my bootloader was locked so i flashed TWRP and from TWRP using ADB installed stock Nougat rom
Click to expand...
Click to collapse
If you was able flash twrp mens your boolaeder was unlocked?
No there's a TWRP that works on locked bootloader.
ma_ko said:
No there's a TWRP that works on locked bootloader.
Click to expand...
Click to collapse
Seems that TWRP was inatlled before the bootloder was locked again.

Unlock bootloader on non-booting device?

I updated to Pie today using OTA. This resulted in a bootloop. Since my bootloader was already unlocked, I booted TWRP (not flashed) and swapped slots. This resulted in booting to the recovery "no command" prompt instead. So I downloaded the only ROM Xiaomi has on their site - 8.1 - and flashed this with the "flash_all_except_storage" script. Still bootloops, only now the bootloader is relocked.
So, anyone know how to unlock the bootloader on a non-booting Android One device? Is there an EDL mode on these?
tin2001 said:
I updated to Pie today using OTA. This resulted in a bootloop. Since my bootloader was already unlocked, I booted TWRP (not flashed) and swapped slots. This resulted in booting to the recovery "no command" prompt instead. So I downloaded the only ROM Xiaomi has on their site - 8.1 - and flashed this with the "flash_all_except_storage" script. Still bootloops, only now the bootloader is relocked.
So, anyone know how to unlock the bootloader on a non-booting Android One device? Is there an EDL mode on these?
Click to expand...
Click to collapse
Seriously? No one reads thread online?! I quote to NEVER, EVER, FLASH OREO/NOUGAT ROMS AFTER UPDATING TO PIE!!!
I downloaded the latest OFFICIAL ROM when it was already bootlooping.... Seriously? I'm supposed to go searching online for 3rd party information rather than the official?
Now how about people with useful information instead of arrogance?
If I'm not wrong you just need to boot into bootloader and fastboot oem unlock. With unlocked bootloader, go fastboot mode and flash official stock pie fastboot rom

The phone does not enter fastboot / bootloader mode

Hi everyone,
I am the owner of an A2017G, unlocked bootloader.
I tried them all, but all of them and I can't get into fastboot / bootloader mode.
Ihave flash rom via MIFLASH and AXON7 EDL TOOL using rom Nougat and Oreo, but the result is always the same !!!
Do you have any ideas to help me, perpetuate?
Thank you.
Use miflash and flash unlock bootloader image by Turkdev, even in oreo it will give you fastboot menu.
I did this 3 days ago to relock my bootloader
Use this tutorial:
https://forum.xda-developers.com/axon-7/how-to/guide-unlock-bootloader-easily-t3704595
The reason you lose your fastboot menu because you unlock BL with another image (using Axon 7 EDL tool perhaps), but if you do unlock with turkdev image in tutorial, your fastboot menu will stay there
YoungAll said:
Use miflash and flash unlock bootloader image by Turkdev, even in oreo it will give you fastboot menu.
I did this 3 days ago to relock my bootloader
Use this tutorial:
https://forum.xda-developers.com/axon-7/how-to/guide-unlock-bootloader-easily-t3704595
The reason you lose your fastboot menu because you unlock BL with another image (using Axon 7 EDL tool perhaps), but if you do unlock with turkdev image in tutorial, your fastboot menu will stay there
Click to expand...
Click to collapse
Thank you very much, YoungAll.
You were really very kind and extremely helpful.
In the coming days I will try the guide you posted to me.
Until next time :good::fingers-crossed:

Urgent Help Required please!!!

1: my k20 phone got hard bricked as its boot loader was unlocked and i gave fast boot command : fast boot oem lock and my system got destroyed and boot loader got locked
2: now my phone gets boot into fast boot mode my laptop detects it , but i am unable to flash any recovery or any other image as its in locked boot loader status
3: mi flash tool unable to flash stock rom it says unable to erase in lock state
4: mi unlock tool inst unlocking as it says go to developer option and add account for unlocking but phone is bricked
5: i read many threads on how to flash with lock bootloader Qualcomm 9008 port by making deep flash cable at home but any other solution how to get into EDL mode without disassembling the device?
please help me urgent
please help
zubin1594 said:
2: now my phone gets boot into fast boot mode my laptop detects it , but i am unable to flash any recovery or any other image as its in locked boot loader status
please help me urgent
Click to expand...
Click to collapse
Since you can entr the fastboot mode, then pls download the latest fastboot rom for your phone and flash it as per this guide: https://c.mi.com/oc/miuidownload/detail?guide=2.
Unable to flash any image since bootloader is in lock state
Not able to flash any image since boot loader is in locked state
zubin1594 said:
Not able to flash any image since boot loader is in locked state
Click to expand...
Click to collapse
That's the point, you can flash the original firmware (the same one that is currently in your smartphone) even with locked bootloader. Try it before you say it can't be done.
Nope buddy boot loader is locked and system is already installed therefore mi flash tool ia unable to erase it cuz it shows me error cannot erase in lock state i tried flashing stock global rom through mi flash tool
exactly - flash stock rom for fastboot - I've done it multiple times
zubin1594 said:
Nope buddy boot loader is locked and system is already installed therefore mi flash tool ia unable to erase it cuz it shows me error cannot erase in lock state i tried flashing stock global rom through mi flash tool
Click to expand...
Click to collapse
Try using some older flashing tool and if that doesn't work try using some older Chinese flashing tool and of course the fastboot firmware file in the format *.tgz*.
Ok so i found a mi unlock tool which is a modded verion of original tool what it does is bypass server authentication and unlocks bootloader of device thanks it wont connect to xiaomi for checking device unlocking permission and will unlock it

Did I completely brick my T-Mobile 6T?

Hello, I recently purchased the T-mobile version of the 6T (bad idea) that had a locked bootloader, and tried to flash it to the international version so I can root the device. I followed this post in hopes of achieving it. The device will no longer boot. The screen quickly flashes with a Oneplus logo with "fastboot mode" underneath then I am met with this error: "Build version and HW is not match!". Is it completely bricked? Can I flash back to a T-Mobile OS?
If it is truly bricked I am curious if someone could explain why it may have happened. As in, has T-Mobile changed some the checks involved with flashing to the international version? Or was it because the device was running the latest Oxygen OS, is it impossible to downgrade this way? I am genuinely curious and want to take this as a bitter learning experience.
Thanks for your input.
It depends, did you select oem unlock and usb debugging and then unlock the bootloader prior to trying to flash another rom to the device? If you successfully unlocked the bootloader, prior to messing around with flashing, then no, I doubt you hard bricked. If you did NOT unlock the bootloader, then yes, you may have hard bricked.
If you did unlock the BL, I would suggest flashing the fastboot rom for the build your currently on. Or, you could use the msm tool. Both of the above can be found in the forums for the 6t.
Pain-N-Panic said:
It depends, did you select oem unlock and usb debugging and then unlock the bootloader prior to trying to flash another rom to the device? If you successfully unlocked the bootloader, prior to messing around with flashing, then no, I doubt you hard bricked. If you did NOT unlock the bootloader, then yes, you may have hard bricked.
If you did unlock the BL, I would suggest flashing the fastboot rom for the build your currently on. Or, you could use the msm tool. Both of the above can be found in the forums for the 6t.
Click to expand...
Click to collapse
Thanks for the reply. Oem unlock and usb debugging were enabled but the bootloader was not unlocked. I was trying to avoid the 7-day wait time for the unlock bin from oneplus/tmobile.
I was able to flash back to tmobile OOS 9.0 found in this post using the v2 version. I was still able to update OTA to the latest 10.3.7.
Edit: Some_Random_Username has comented to include tmobile OOS 10.3.7
Did you get it all figured out? If not here's a semi detailed version of what I had to do with my tmobile 6t, because I had issues as well. Mainly my phone not showing up in msm tool. Only wanted to work after it had Android 9. Also I had little sleep the night I did this so I'm trying to recall the best I can.
Assuming your phone shows in msm tool at this point
Used msm tool to flashed older A9 ops https://androidfilehost.com/?fid=11410963190603895067
Boot in and enable adb and oem bootloader unlock
Boot to bootloader and unlock it
Flashed first A10 OOS https://androidfilehost.com/?fid=4349826312261819701
Flashed 10.3.7 to both slots with twrp https://androidfilehost.com/?fid=10763459528675591630
Flash rom
Flash Magisk
Profit
Some of this could be redundant, but my late night research and trial and error paid off.
GoldfishSnack said:
Thanks for the reply. Oem unlock and usb debugging were enabled but the bootloader was not unlocked. I was trying to avoid the 7-day wait time for the unlock bin from oneplus/tmobile.
I was able to flash back to tmobile OOS 9.0 found in this post using the v2 version. I was still able to update OTA to the latest 10.3.7.
Edit: Some_Random_Username has comented to include tmobile OOS 10.3.7
Click to expand...
Click to collapse
Well I'm glad you were able to get it up and running. I highly suggest unlocking that bootloader as soon as you can....having an unlocked BL is key to getting out of a lot of bricked situations.

Categories

Resources