Flash-all-lock.bat Jun 2026

In a standard Xiaomi Fastboot ROM folder, you will usually see three variants: flash_all.bat : Wipes all data but keeps the bootloader flash_all_except_storage.bat

An unlocked bootloader is a security risk. It allows an attacker with physical access to flash modified partitions. If you are moving away from custom ROMs and want to use your device for banking, corporate email, or sensitive data, locking the bootloader re-enables:

It is the standard method for preparing a phone for a warranty return or sale, as it restores official software and locks the bootloader to ensure the device is "certified".

Right-click the downloaded .tgz or .zip file and extract its contents to a folder on your desktop (e.g., C:\flash-lock ).

This script is not for daily use. It is a niche tool reserved for specific scenarios. You should consider using it only under the following circumstances:

The critical line that differentiates this script from the standard flash-all.bat is fastboot flashing lock . This command instructs the bootloader to close the door on unsigned code execution, effectively sealing the device's software environment.

@ECHO OFF PATH=%PATH%;"%SYSTEMROOT%\System32" fastboot flash bootloader bootloader-image.img fastboot reboot-bootloader fastboot flash radio radio-image.img fastboot reboot-bootloader fastboot update image-device.zip echo Firmware flashed successfully. echo Re-locking bootloader... fastboot flashing lock exit

Technically, yes: remove the -w flag from the fastboot update line. Locking the bootloader without wiping data often causes corruption due to mismatched encryption keys. Always let it wipe.

No, .bat files are Windows-specific. However, the equivalent scripts exist:

The flash-all-lock.bat file is a script primarily used for and Android Open Source Project (AOSP) devices to automate the installation of factory firmware while simultaneously locking the bootloader . Core Functionality