When you encounter the error on a Huawei S7700 series switch (specifically the S7712 or S7703/06 models using the SRU components like the S7721U), it indicates a critical mismatch or corruption in the system software. This error typically occurs during a reboot or a version upgrade.

Clear the patch file setting in the BootRom menu and boot with only the .cc file first. Verify Hardware Health

Restart the switch. When prompted during the power-on self-test (POST), press or Ctrl+E immediately. Default Password: Admin@huawei.com or Huawei@huawei . Note: Older versions may use huawei . 2. Check Storage Space

To help you find the exact file you need, could you tell me: What is the you are trying to install?

Sometimes the error "Link" refers to a broken link between the main system software and a patch file. If you have a .pat file set to load at startup that is incompatible with your new .cc file, the verification will fail.

Are you seeing any after the "Verify Failed" message? Do you have a redundant SRU installed in the chassis?

If the error persists across multiple different software versions: The on the S7721U board may be failing.

The system is looking for a specific filename that doesn't exist or is mislabeled. 🚀 Step-by-Step Recovery Guide

Before downloading a new image, ensure the flash has enough room. Select from the menu. Delete old .cc files or logs if the flash is full. 3. Transfer a Valid Image via FTP/TFTP