How To Guide - Safely convert regions (includes T-Mobile) as well as restore the...

EtherealRemnant said:

Try this one.

3.56 GB file on MEGA

mega.nz

That one is also multi target. Both of these have been tested, I don't know why it's not working for you. You can also try not selecting a target and see what happens, I have found I don't always need to select the target if my device firmware hasn't been too corrupted.

Beware that with this one, you can't unlock the bootloader until after you go to OOS12 because OnePlus bugged the erase script on 11.2.10.10.

Click to expand...

I have tried it each n every way still get param preload error

rizzmughal said:

I have tried it each n every way still get param preload error

I don't know what to tell you. That normally only happens with T-Mobile variant devices or devices that have been corrupted to the point of no return (in which case the Indian 9 Pro MSM is the only hope of restoring to a working phone but that adds more layers of complexity to the equation since it immediately introduces the dual SIM bug to any US variant).

EtherealRemnant said:

I don't know what to tell you. That normally only happens with T-Mobile variant devices or devices that have been corrupted to the point of no return (in which case the Indian 9 Pro MSM is the only hope of restoring to a working phone but that adds more layers of complexity to the equation since it immediately introduces the dual SIM bug to any US variant).

Yes i have my tmo device has been flashed with op9 pro indian msm so aint there a way flash this to get rid of dual sim bug