Use binwalk to find the SquashFS start offset:
sudo mount -t squashfs -o loop recovery.squashfs /mnt/recovery # Or: unsquashfs -d recovery_root recovery.squashfs huawei s7721u recovery image verify failed repack
typically occurs when the device's bootloader detects an unauthorized or corrupted image, often after a failed update or an attempt to flash a modified (repacked) recovery image Understanding the Error Use binwalk to find the SquashFS start offset:
If the physical buttons or SD card method fail, try official software recovery tools. Install Huawei HiSuite on your PC. huawei s7721u recovery image verify failed repack
The S7721U is a – its verification is often stronger than consumer routers. If you cannot patch the bootloader, consider:
Mount it (or use unsquashfs ):