[GUIDE] Complete Step-by-Step Convert T-Mobile to Global (or other) firmware

[arslanejaz33]

maybe restart the procedure from step 1

 

[keesh_x]

maybe restart the procedure from step 1

yes doing that now, will update after i am done. do you think usb 3.x can be culprit?

 

[arslanejaz33]

no i dont think so , i flashed my phone from usb c port of my laptop and it was like usb 3.1-3.2 so it dont matter

 

[keesh_x]

maybe restart the procedure from step 1

Tried the process altogether from step 1, did step 2 via unlock.bin file from oneplus.

Flashed european fastboot rom, initial steps succeeeded like before, but then it said rebooting to fastboot, it rebooted to recovery instead, from there i selected fastboot after that errors started popping up in the flash all script majorly, "flashing is not allowed for critical partiitions", "partition not found" and eventually device rebooted, but i dont have any cellular signals or wifi, sound etc. Kindly have a look at the attached screenshots, what exactly am i doing wrong, i really dont understand, please help

 

[arslanejaz33]

Tried the process altogether from step 1, did step 2 via unlock.bin file from oneplus.

Flashed european fastboot rom, initial steps succeeeded like before, but then it said rebooting to fastboot, it rebooted to recovery instead, from there i selected fastboot after that errors started popping up in the flash all script majorly, "flashing is not allowed for critical partiitions", "partition not found" and eventually device rebooted, but i dont have any cellular signals or wifi, sound etc. Kindly have a look at the attached screenshots, what exactly am i doing wrong, i really dont understand, please help

Sorry for the late reply you should not do anything when it restarts again and the terminal says "waiting for device" the flashing process with resume automatically when it boots up again and goes to recovery mode

 

[TechForEver]

right, but i used the europe fastboot rom linked by OP, yet still it went to crashdump mode, any idea why?

You used Europe fastboot rom (which is in this thresd) to convert?

 

[TechForEver]

Unlocked bootloader, now Using the fastboot rom mentioned by OP, the european rom, but now i cant flash fastboot rom, after running flash_all.bat in fastboot mode, it did a few steps formatting etc then says on the cmd, rebooting to fastboot but it went to crash dump mode, am i doing something wrong?

You used Europe fastboot rom (which is in this thresd) to convert?

 

[Mostafahemad]

I don't have T-Mobile sim and not in the US. How would I go about this?

You not need t.moblie sim neither to be in US

Oh my friggen god, so super duper incredibly happy! Thanks to OP and people on here I now not only have EVO X 7.5 with dual sim on my TMO OP8 but I unbricked what I thought was a hard bricked OP8.

For anyone who had the absolute misfortune of a crashdump due to misflashing the wrong .ops file, there's hope. I had that, the DIAG 900E only driver, alongside zero fastboot and recovery. It seemed hopeless, but being desperate and in lieu of the advice above and from other sites I kept trying and finally the following revived my phone:

1) I had to use a usb 2.0 port. It can be inbuilt or it can be from a hub but you really need usb 2.0.
2) I had to use a different cable than the one from oneplus. I ended up using the one used to charge my wireless headphones.
3) You should try windows 10 and above. Others may have had luck with windows 7 and native usb 2.0 but not in my case.

I had both the msm download and device manager open and ready. I kept the usb port in the system, then while holding down both volume buttons and power, quickly connected the usb C end into the phone. You can try without the power button but regardless you need to see 9008 pop up under ports in device manager. If the phone under device manager still remains as 900E then you have to start the process over again until it shows EDL (9008). If it shows bulk you need to reinstall your drivers.
On MSM immediately ENUM and Start.

If the above doesn't work, look for resources as if it showed issues only after msm there's still a good chance you can save it.

This is a reference for anyone unbrick his device as l want to write what happened to me but l found someone wrote his story like me

 

[keesh_x]

Sorry for the late reply you should not do anything when it restarts again and the terminal says "waiting for device" the flashing process with resume automatically when it boots up again and goes to recovery mode

thank you for your reply, i tried waiting for it for about a two minutes or more, it felt like it wasnt proceeding at all. should i wait more? kindly let me know if thats the case or whatever i am doing wrong, any help is appreciated

 

[keesh_x]

You used Europe fastboot rom (which is in this thresd) to convert?

Yes, i used the europe rom mentioned by OP in this thread, version was 10.5.9, yet still its not working, crash dump is not occuring now but when i run flash all, it does some flashing and says rebooting to fastboot and then never reboot to fastboot, it just reboots to stock recovery and stays there, and if i reboot to fastboot manually from there, flash all script starts giving errors, "flashing is not allowed for critical partition", I have literally no idea where i might be going wrong

 

[TechForEver]

Yes, i used the europe rom mentioned by OP in this thread, version was 10.5.9, yet still its not working, crash dump is not occuring now but when i run flash all, it does some flashing and says rebooting to fastboot and then never reboot to fastboot, it just reboots to stock recovery and stays there, and if i reboot to fastboot manually from there, flash all script starts giving errors, "flashing is not allowed for critical partition", I have literally no idea where i might be going wrong

Try one of these OnePlus fastboot roms
Must working
Unzip file and tun flash all bat

Some others faced like you dump error
but with one of these roms its working

[ROM][STOCK][FASTBOOT][OP8] Stock Fastboot ROMs for OnePlus 8

Things are changing with the advent of project treble and seamless updates. OnePlus will no longer release ROMs flashable via recovery (either stock) because is no more needed. The updates will be done on the slot not used for example if you are...

forum.xda-developers.com

 

[Mostafahemad]

right, but i used the europe fastboot rom linked by OP, yet still it went to crashdump mode, any idea why?

Why you not follow the steps just confirmall drivers installed then start from step 1 with msm A10 not A11 then step two then use eu 10.5.9 fastboot rom not use eu 11 i as A11 always above 95% get crash dump

 

[Mostafahemad]

Another thing during flashing eu fastboot rom when it reboot to fastboot , it reboot to fastbootd it looks like recovery but it not so not retains to fastboot manually as critical partitions flashes in fastbootd not in fastboot so start again with msm with A10

 

[keesh_x]

Why you not follow the steps just confirmall drivers installed then start from step 1 with msm A10 not A11 then step two then use eu 10.5.9 fastboot rom not use eu 11 i as A11 always above 95% get crash dump

i followed every step as mentioned. I have drivers installed and i am using msm 10 not 11, but with step two i couldnt unlock bootloader with the method mentioned so used unlock.bin from oneplus and used that to unlock bootloader but with step three, used eu 10.5.9 not 11, but i am not encounterring crashdump now, it probably went to crashdump because i updated my system a bit from wifi.

 

[keesh_x]

Sorry for the late reply you should not do anything when it restarts again and the terminal says "waiting for device" the flashing process with resume automatically when it boots up again and goes to recovery mode

tried again, even tried waiting for 10 minutes or so but nothing, until i manually go to fastboot mode myself and then it starts saying "flashing is not allowed for critical partition"

I read in another forum regarding the unlock_critical:

fastboot flashing unlock_critical

Running the above command gives "Device Already : Unlocked !"

As of right now i have tried a lot of possibilities, even used differnet roms, 10.5.12 global as well but every rom just after an inital flashing goes to fastbootd and never progresses afterwards

 

[Mostafahemad]

tried again, even tried waiting for 10 minutes or so but nothing, until i manually go to fastboot mode myself and then it starts saying "flashing is not allowed for critical partition"

I read in another forum regarding the unlock_critical:

fastboot flashing unlock_critical

Running the above command gives "Device Already : Unlocked !"

As of right now i have tried a lot of possibilities, even used differnet roms, 10.5.12 global as well but every rom just after an inital flashing goes to fastbootd and never progresses afterwards

Simple step put the device in fastbootd and show if pc recognizes it or no ,then tell me

 

[iMogul]

The url is not working, 404, any updated link?

Strange, it still works for me. Are you outside of US ? I do see that you got the steps to request the unlock token from OnePlus and proceed.

 

[keesh_x]

Strange, it still works for me. Are you outside of US ? I do see that you got the steps to request the unlock token from OnePlus and proceed.

yep pretty strange, it wasnt working before, finally it started working when it redirected to us site, for anyone having issues with that, this is the link

unlock token - OnePlus (United States)

www.oneplus.com

 

[keesh_x]

Simple step put the device in fastbootd and show if pc recognizes it or no ,then tell me

i ran the following command

adb reboot fastboot

and yes you were right it didnt recognize it being in fastbootd mode, rather in device manager it says "kona for arm64" with yellow triangle meaning i dont have drivers for recovery/fastbootd mode

 

[keesh_x]

Simple step put the device in fastbootd and show if pc recognizes it or no ,then tell me

Thank you so much for the hint, that was the issue, i didnt had any google drivers installed for fastbootd mode, i have flashed the fastboot rom successfully, again thanks a lot.