If you are intentionally repacking the recovery (e.g., to add root or custom features), you must bypass the signature check:
Run:
sudo mount -t squashfs -o loop recovery.squashfs /mnt/recovery # Or: unsquashfs -d recovery_root recovery.squashfs huawei s7721u recovery image verify failed repack
Navigate to the extracted folder. Look for a file named recovery.img or a SquashFS filesystem with offset 0x200000 . If you are intentionally repacking the recovery (e