E6833 Lock Remove Ftf -

Flashing an FTF preserve data while removing the lock. Instead, use ADB (if USB debugging was enabled before lock) or a recovery like TWRP (if installed) to delete:

Simply flashing an FTF file will not remove the screen lock unless you perform a full wipe (userdata partition) during flashing. Flashing without wiping will keep the lock data intact. e6833 lock remove ftf

Follow this exact sequence to successfully flash the firmware and remove the lock. Flashing an FTF preserve data while removing the lock