If the lock flag persists due to Android Verified Boot (AVB), you may need to flash a modified partition to disable verification.
Lock and unlock the bootloader | Android Open Source Project flashing lock flag is locked please unlock it first full
Tap the (or MIUI/OS version) 7 times consecutively until a pop-up reads "You are now a developer!" If the lock flag persists due to Android
By default, manufacturers ship devices with the bootloader in a LOCKED state. This lock acts as a protection flag. When you attempt to write data to any partition (such as system , boot , or recovery ) via fastboot, the system queries the internal state of this flag. If the flag returns a locked status, the system rejects the command and throws the error: Flashing Lock Flag is locked. Please unlock it first! . Why This Security Measure Exists When you attempt to write data to any
Tap on (or Build Number) 7 times until it says "You are now a developer."
$X
Ensure your device has at least 60% battery. USB Cable: Use a high-quality data cable. Step-by-Step Guide to Unlocking the Flag
If the lock flag persists due to Android Verified Boot (AVB), you may need to flash a modified partition to disable verification.
Lock and unlock the bootloader | Android Open Source Project
Tap the (or MIUI/OS version) 7 times consecutively until a pop-up reads "You are now a developer!"
By default, manufacturers ship devices with the bootloader in a LOCKED state. This lock acts as a protection flag. When you attempt to write data to any partition (such as system , boot , or recovery ) via fastboot, the system queries the internal state of this flag. If the flag returns a locked status, the system rejects the command and throws the error: Flashing Lock Flag is locked. Please unlock it first! . Why This Security Measure Exists
Tap on (or Build Number) 7 times until it says "You are now a developer."
$X
Ensure your device has at least 60% battery. USB Cable: Use a high-quality data cable. Step-by-Step Guide to Unlocking the Flag