fastboot flashing lock
Lock and unlock the bootloader | Android Open Source Project fastboot flashing lock Lock and unlock the bootloader
fastboot flash recovery twrp.img
After performing the standard unlock and allowing the device to reboot, boot it back into fastboot mode once more. fastboot flashing lock Lock and unlock the bootloader
Use the volume keys to highlight "Yes" and press the power button to confirm. Reboot: fastboot reboot Method 2: Xiaomi/POCO/Redmi (Using Mi Unlock Tool) fastboot flashing lock Lock and unlock the bootloader
Manufacturers sometimes lock the flashing flag tighter in newer updates. Flash an older stock ROM (if allowed) first, then unlock.
A concise report describing the occurrence, root causes, diagnostic steps, and recommended remediation for the error message: "failed -remote 39 - flashing lock flag is locked. please unlock it first 39--".