For newer iterations or devices with network-enabled emergency menus, Huawei's automated cloud restore can pull authorized images directly from regional servers.
It sounds like you’re dealing with a (likely an ONT/optical modem/router) where the recovery image verification fails, possibly during a firmware upgrade or recovery attempt.
When you see the error message in your BMC (Baseboard Management Controller) console, serial terminal, or on a connected display, it means one thing: huawei s7721u recovery image verify failed link
Download and install the standard Android ADB and Fastboot platform tools on your PC.
If the internal flash image is corrupt, you must upload a fresh image from your PC. If the internal flash image is corrupt, you
(Use with caution – this weakens security but can recover a bricked unit)
In the BootROM menu, navigate to the .
A recovery image verify failed on a Huawei S7721U is a serious, but solvable, issue. Using the BootROM menu to force a USB-based software upgrade is the most effective method for recovery. Following correct, methodical upgrade procedures is the best way to prevent this issue from occurring.
If you'd like, I can:
Press and hold simultaneously. The device should detect the file and begin the update automatically. 2. Try Huawei eRecovery