Huawei S7721u Recovery Image Verify Failed Repack → [ RELIABLE ]

To bypass this signature block, you must flash the repacked RECOVERY.img file directly via Fastboot interface commands instead of running it through the standard UPDATE.APP wrapper:

to let the tool automatically find and flash the correct official firmware. Attempt eRecovery Restore

Files were modified incorrectly before being flashed. Step-by-Step Fix for S7721U Recovery huawei s7721u recovery image verify failed repack

: If the device is stuck in a loop, a force restart might clear temporary glitches. Hold Volume Down + Power for 10+ seconds until the logo appears. Why "Repacking" Often Fails

# In BootROM/BootLoad menu Delete current system file # Or choose the option to Erase Flash Use code with caution. 4. Upload the Correct Firmware File You need the correct *.cc (system software) package file. Select the option (via XMODEM or TFTP/FTP). For faster transfers, FTP/TFTP is recommended. Ensure the file is not corrupted during transfer. 5. Verify and Set Startup Files To bypass this signature block, you must flash

: Standard Android unpacking tools strip or rewrite crucial structural properties inside the footer of the .img file.

If the verify failed message persists, the .cc file itself may be improperly packed, or you may be attempting to use a modified image. Repacking ensures that the package header, CRC checks, and signatures align. Hold Volume Down + Power for 10+ seconds

Incompatible kernel arguments or ramdisk compression errors.