The Mi Flash Tool looks for specific batch scripts ( .bat ) within the ROM folder to execute the flashing process. These scripts tell the tool whether to: Wipe data but leave the bootloader unlocked. Save user data: Update the system without wiping files. Clean all and lock: Wipe data and relock the bootloader.
This guide will walk you through the exact reasons this error occurs and provide a clear, step-by-step blueprint to fix it, getting you back to a successful flash.
Ensure you have downloaded a (ending in .tgz ) and not a Recovery ROM (ending in .zip ). Mi Flash Tool only works with Fastboot ROMs. If your file ends in .zip , you have the wrong version for this tool. Step 2: Correct Folder Selection (Most Common Fix) The Mi Flash Tool is very picky about folder hierarchy. Extract your .tgz file using a tool like 7-Zip or WinRAR.
You selected the main parent folder instead of the specific subfolder where the images and batch files reside.
At the bottom of the Mi Flash Tool, you will see three options: (runs flash_all.bat ) save user data (runs flash_all_except_data_storage.bat ) clean all and lock (runs flash_all_lock.bat ) mi flash error cannot find file flashalllockbat
logs. The tool wasn't looking for the file in the folder he selected; it was looking for it in a nonexistent subdirectory. He realized he had unzipped the firmware "cleanly," but the Mi Flash Tool expected a specific architecture.
Move all the extracted files from your ROM package into this new folder.
Sometimes the 'flash_all_lock.bat' error is just the first in a series of issues. A related problem is the update sparse crc list failed error, which can occur when downgrading from MIUI 13 or 14 to an older version. If you face this, there's a known fix:
You selected the main extracted folder instead of the specific subfolder containing the flashing scripts. The Mi Flash Tool looks for specific batch scripts (
A: This often points to a path or extraction depth issue. Re-check that the selected folder is the one directly containing the script files. Also, ensure the path is short and has no spaces or special characters.
Move the extracted firmware folder directly to the root of your drive (e.g., C:\xiaomi_firmware\
to ensure your device is detected in fastboot mode, then click Create Log Folder
: In Mi Flash Tool, click "Select" and navigate to the folder that contains the folder and the select the folder itself; select the parent folder Create a 'log' Folder : Some versions of Mi Flash require a folder named Clean all and lock: Wipe data and relock the bootloader
(meant for flashing via the phone's recovery menu) instead of the required Fastboot ROM Invalid File Path
Move your extracted ROM folder directly to the root of your hard drive (e.g., C:\Xiaomi\ ).
The Mi Flash tool is misconfigured in the bottom right corner (e.g., trying to use "clean all and lock" when only flash_all.bat exists).
To fix the Mi Flash error "cannot find file flash_all_lock.bat" , ensure you have correctly extracted a Fastboot ROM
Avoid deep subfolders or desktop paths which often contain spaces (e.g.,