You do not typically download this file individually; it is a component of a larger firmware package: Official ROM Packages
all system partitions (boot, recovery, system, etc.) with stock firmware. all user data from the internal storage. flash-all-lock.bat download
Downloading just the .bat script will not work and may cause partial flashes, leading to a soft-bricked device. You do not typically download this file individually;
You should never download this script as a standalone file from untrusted sources, as it must match your specific device's firmware. flash-all-lock.bat download