Whatever state your phone is currently in this will reset both partitions so you can install PA
- Reboot into fastboot, this can be done via advanced reboot or holding power and Vol -
- fastboot --set-active=a
- Power off
- Reboot into EDL and run the MSM tool to complete reset the phone back to stock 10.0.07 !!! EXIT THE TOOL AFTER IT IS COMPLETE !!!
- Skip through all the setup, enable OEM unlocking, reboot into fastboot and oem unlock (this can be done via advanced reboot or holding power and Vol -) (don't know if this is required, probably is)
Repeat this for the 2nd partition, B
- Let the phone restart, Reboot into fastboot (this can be done via advanced reboot or holding power and Vol - )
- fastboot --set-active=b
- Power off
- Reboot into EDL and run the MSM tool to complete reset the phone back to stock 10.0.07 (this time it'll flash to partition B instead of A) !!! EXIT THE TOOL AFTER IT IS COMPLETE !!!
- Skip through all the setup, enable OEM unlocking, reboot into fastboot and oem unlock (this can be done via advanced reboot or holding power and Vol -) (this is required)
- Let the phone restart, Reboot into fastboot (this can be done via advanced reboot or holding power and Vol - )
- fastboot --set-active=a (this is so we are back on A)
- skip through all the setup, enable ADB
adb reboot fastboot
fastboot -w
fastboot reboot fastboot
OP recovery allows for fastboot commands and is somehow different than accessing fastboot via volume method or navigating to it via the recovery, this is why you need to run ABD reboot fastboot
After that wipe userdata with -w, reboot into fastboot with the command and flash the files
These are the exact steps I took after bashing my head a for a few mins.
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MSM Tool:
https://forum.xda-developers.com/7t-pro/how-to/op7tpro-unbrick-tool-to-restore-device-t4002909 - 10.0.7 whatever version you have.
Also a tip for accessing EDL mode that people within the thread missed: Also If youre stuck on actually getting into EDL Mode, you have about 5-10 seconds after the USB is plugged in to the phone before it just boots up into charging mode so have fast fingers on pressing Enum and Start