This will create a new, repacked recovery image with the modified verification components.
To avoid "recovery image verify failed" on the S7721U-HI in the future: Always use official Huawei software updates. Always verify the CRC/hash of the file. Use sftp for file transfers.
By pushing the original untouched binaries, the verification framework will validate the signature upon the next startup sequence. Method 3: Flash Tool Alternatives for Hard-Bricked Devices huawei s7721u recovery image verify failed repack
Swap to a high-quality SanDisk or Samsung SD card under 32GB formatted cleanly to FAT32. Fastboot hangs on < waiting for device > terminal response.
With an unlocked bootloader and your repacked recovery.img ready, you can proceed to flash it. While your device is in fastboot mode, use the following command in your Platform Tools folder: This will create a new, repacked recovery image
: Connect an Ethernet cable from your local machine to the management port ( ETH ) of the switch. Assign a static IP address to your computer (e.g., 192.168.1.10 ) and start a local TFTP server hosting the authorized Huawei software package.
Because the S7-721u expects an image format with specific structural tracking data, passing a raw Android image directly via an SD card update ( dload ) often triggers an image verification error. Use sftp for file transfers
Solving Huawei S7721U "Recovery Image Verify Failed" During Repack
: Manual repacking often alters the exact block sizes, offset locations, or file headers specified in the system partition table, triggering an automatic safety rejection by the BootROM.