Re-packing Huawei images requires precise knowledge of the Huawei file structure ( .cc is generally a special archive) and should only be done if you have a known good source file.
: The BootLoad phase runs a cyclic redundancy check (CRC) or SHA-256 hash validation over the entire recovery package. Repacking a file without updating the global checksum headers triggers an immediate verification failure. huawei s7721u recovery image verify failed repack
Set up a TFTP server and transfer the repacked recovery image to the Huawei S7721U device. You can use tools like tftp or SolarWinds TFTP Server to facilitate the transfer. Re-packing Huawei images requires precise knowledge of the
Or a Huawei-specific header:
If you extracted a signature earlier, re‑append it: Set up a TFTP server and transfer the
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If you have tried all the steps above and the S7721U still fails to verify the image, the issue could be a faulty flash memory chip (NAND) on the switch's mainboard, which cannot be fixed with software repairs. In this scenario, contact Huawei Enterprise Support for a Hardware Replacement (RMA). Let me know: What are you using (S7721U-XX)? What version are you trying to flash? Are you getting any log messages on the console? Share public link