If you are certain you want to use the "clean all and lock" option but the file is missing, some users fix this by creating a dummy file. However, It is much safer to use the "clean all" script. If you must lock your bootloader, ensure you are flashing the exact official global or regional ROM that originally came with your phone. Summary Checklist Select "clean all" instead of "clean all and lock." Move the ROM folder to * C:* to shorten the path. Ensure the folder contains an images sub-folder.
Ensure your device bootloader is unlocked before attempting to flash via Fastboot. mi flash error cannot find file flashalllockbat
If you see another folder inside the first one, go deeper. The tool needs to "see" the .bat files immediately. 3. Match the Flash Option At the bottom of the Mi Flash Tool, you have three options: (looks for flash_all.bat ) Save user data (looks for flash_all_except_storage.bat ) Clean all and lock (looks for flash_all_lock.bat ) If you are certain you want to use
Check the file extension of the original firmware package you downloaded. Summary Checklist Select "clean all" instead of "clean
The "cannot find file flash_all_lock.bat" error is a common roadblock when using the Mi Flash Tool to unbrick or update Xiaomi devices. It essentially means the software is looking for a specific instruction script that isn't where it expects it to be. Why the Error Occurs