When upgraded to 6.1, it stucked at 98% and the upgrade tool reported: Something happened with Flash Writer.
Then I enter to Bootloader, run upgraded again, but it always stuck at 3% (Some reportings: Invalid Model, Invalid Device ID, The image is corrupt.). Many times to tried again, many other Roms, but the same error (stuck at 3%).
Tried via SD menthod, but not run.
Please show me the way to fix.