The Huawei S7721U is a high-end switch designed for data centers and large-scale networks. Like any complex device, it has a sophisticated software system, including a recovery image that allows the device to boot up and recover in case of a failure. However, sometimes issues arise, and the recovery image verification fails. In this write-up, we'll explore the possible causes, effects, and a step-by-step guide on repacking the recovery image.
U-Boot 2013.07 (Oct 12 2019 - 14:22:13)
Alternatively, from a working S7721U: