Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- File

: Go to Settings > About Phone and tap on Build Number seven times until it says "You are now a developer."

: If that fails, some older or specific devices use: fastboot oem unlock : Go to Settings > About Phone and

(Use unlock_critical to unlock bootloader and flash-critical partitions like xbl , abl .) : This action triggers an automatic factory reset

Note: On some devices like Xiaomi, you must also bind your account under "Mi Unlock Status" and wait for a specified period (e.g., 168–720 hours). 2. Enter Fastboot Mode despite your intentions

This error is a definitive sign that, despite your intentions, the protection mechanism is still active and is blocking the operation.

: This action triggers an automatic factory reset and wipes all data on the unit. Troubleshooting Common Obstacles Chipset-Specific Tools (Unisoc, Spreadtrum, Mediatek)

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)