Mi Flash Error Cannot Find File Flashalllockbat ((install)) -

The error "cannot find file flash_all_lock.bat" typically occurs because the Mi Flash Tool is looking for a specific script that is missing from the directory you selected. This is most often due to an incorrect folder path or using the wrong type of ROM. Most Common Causes

Purpose of flash_all_lock.bat:

  • Locks the bootloader after flashing the ROM.
  • Reverts the device to a completely stock, locked state (like out-of-the-box).
  • Used when you want to sell the phone, claim warranty, or fix anti-rollback issues.

If you want, say “I’ll share the ROM filename and a folder screenshot” and I’ll point out the next step. mi flash error cannot find file flashalllockbat

  1. Incorrect ROM Type (Recovery ROM vs. Fastboot ROM): This is the most common cause. Mi Flash Tool requires a Fastboot ROM (filename usually ends in .tgz or contains fastboot in the name). Users often download the Recovery ROM (filename usually ends in .zip), which is intended for local updates via the phone's recovery mode or Updater app, not for the Mi Flash Tool. Recovery ROMs do not contain the flashall.bat or flashall_lock.bat scripts.
  2. Corrupted or Incomplete Download: The archive was not fully downloaded, or the extraction process failed, resulting in missing files within the folder.
  3. Incorrect Extraction Method: Fastboot ROMs are often compressed in .tgz or .gz formats. If a standard ZIP extractor is used, or if the user fails to extract the archive completely before selecting the folder in Mi Flash, the directory structure will be incorrect.
  4. File Structure Issues: Mi Flash Tool requires the user to select the root folder containing the images folder and batch files. Selecting a parent folder or a sub-folder will result in the tool failing to locate the script.

If that file is missing from your ROM package (some custom or older ROMs don't include the lock script), try selecting "clean all" instead. This will look for flash_all.bat and usually bypasses the error. The error "cannot find file flash_all_lock

Solution 3: Update Mi Flash to the Latest Version Locks the bootloader after flashing the ROM