Huawei S7721u Recovery Image Verify Failed Repack Repack -

This is the crucial step. After repacking the filesystem (e.g., mksquashfs ), the engineer reconstructs the raw recovery image: header + kernel + initramfs + device tree. However, without Huawei’s private key, a valid RSA signature cannot be generated. Therefore, the engineer must leverage one of two legitimate strategies:

DRAM: 256 MiB NAND: SPI NAND 128 MiB Loading recovery image from mtd2... Verifying signature... !!!! Recovery image verify failed repack !!!! Starting recovery shell... BusyBox v1.23.2 (built-in) huawei s7721u recovery image verify failed repack

Use hexdump to inspect: