[Q] [Locked OP6] Bootloop after upgrading to 10.3.0 - how to recover without format

[roel1976]

My dad got the OTA update to 10.3.0 on xmas day and installed it. However the phone is now stuck on boot logo. He has a locked phone just as it came out of the box (ie no TWRP, no OEM unlock, no root).

I am quite experienced with installing custom ROMs but with locked phones I am lost. Is there anyway to recover the device without deleting data / factory reset? This is because my dad has quite a lot of pics on the device that are not backed up (yeah I know...).

Things I've tried so far:
- reboot holding power button + volume up
- boot flash twrp from fastboot - no permission due to phone being locked
- in stock recovery I do not get access to device via cable
- installed Tool all in One - it sees phone via fastboot

I always use the Stock Fastboot ROMs for OnePlus 6 myself to recover from soft bricks but this wipes data so no option here. Unless there is a way to install parts of ROM? Any other tips or ideas from the awesome XDA community? :good:

Btw this is the update he installed:
Screenshot of update that was installed

 

[Apachyx]

If you boot on twrp, it does not ask for the pin code to access the data?

Maybe try the last twrp for OOS 10.3.0 : ( https://androidfilehost.com/?fid=4349826312261678088 )

Use command : fastboot flash boot twrp-3.3.1-16-enchilada-Q-mauronofrio.img

Try flash a new boot img :

Stock boot 10.3 img
https://drive.google.com/open?id=1w44cUg815g-H1h_6gObUVPLDTc_dtiMX

 

[roel1976]

The phone is not unlocked and therefore has no TWRP recovery. This is my problem, if it was unlocked I would have figured out a way to fix it.

PS it does ask for pincode when accessing stock recovery

 

[GuestD2559]

I'm not sure if this works on locked bootloaders but try switching boot slots using fastboot.

 

[Borat38]

Couple of weird things:
-you don't need an unlocked bootloader for fastboot to boot back into the system

-the dual partition was designed precisely to prevent things like this from happening. When an update fails, you are supposed to roll back to the old slot you were on previously.

Anyway, since you are able to boot to fastboot, can you try to get to stock recovery again from fastboot and see if you can boot up to system from there?

 

[awaiz]

Hey
You can try to change the boot slot using fastboot mode
It can help uh maybe
Its worth to try

 

[roel1976]

Hey
You can try to change the boot slot using fastboot mode
It can help uh maybe
Its worth to try

When I try to set it to slot A (it's B now) it says device does not support slots which is weird as 'fastboot getvar current-slot' does show it using slot B right now.

When I try to set it to B (ie current slot) it says: FAILED (remote: 'Slot Change is not allowed in Lock State').

 

[roel1976]

Anyway, since you are able to boot to fastboot, can you try to get to stock recovery again from fastboot and see if you can boot up to system from there?

When I reboot to stock recovery it gives two options:

- Wipe Data and Cache
- Advanced

There are two reboot options under Advanced:
1. Reboot to fastboot
2. Reboot to recovery

2nd option just boots it back to this same recovery. Boot to fastboot works as well. So there is no option to reboot the device.

Perhaps I can try to flash the stock ROM (kinda of dirty flash) but again not sure if that works on locked phone.

 

[JagDave]

https://www.androidexplained.com/change-active-partition-slot/

 

[roel1976]

https://www.androidexplained.com/change-active-partition-slot/

This doesn't work unfortunately on a locked device.

 

[roel1976]

I found the fix and it was very simple: in Recovery under Wipe Data and Cache it has the option to delete 1. System Settings 2. Cache 3. Wipe all (incl Data).
I choose option 1 (System Settings) and after that it booted and I had to set up phone again as with a new install but all data on sd card had remained. I did lose all apps but that is a very minor thing.

Thanks for everyone who thought along with me. We got there in the end

 

[Alamin4736]

help me.. my op6 stuck in bootlogo.. how can i run my phone back. it is still locked never rooted..

 

[knox58]

help me.. my op6 stuck in bootlogo.. how can i run my phone back. it is still locked never rooted..

Bro..Use the Msm tool to get recover coz you have the locked bootloader

 

[raxus_5]

I found the fix and it was very simple: in Recovery under Wipe Data and Cache it has the option to delete 1. System Settings 2. Cache 3. Wipe all (incl Data).
I choose option 1 (System Settings) and after that it booted and I had to set up phone again as with a new install but all data on sd card had remained. I did lose all apps but that is a very minor thing.

Thanks for everyone who thought along with me. We got there in the end

I am facing similar problem with my OP5. When I boot in recovery, it asks for pattern to unlock. But does not accept any pattern. In the absence of pin, it gives option to Wipe Data. Will I get similar options like you did ? I am hoping to save my data.