If the repacking tool does not correctly format the image headers for this specific device, the bootloader will reject it as corrupted. Verified Solutions & Troubleshooting
# Copy image to /tmp (via USB stick mounted as /mnt/usb) cp /mnt/usb/repacked_recovery.img /tmp/ # Flash using mtd utility mtd write /tmp/repacked_recovery.img recovery huawei s7721u recovery image verify failed repack