Huawei S7721u Recovery Image Verify Failed Link Work · No Login

Change the to the new filename you just downloaded. Save and Reboot. ⚠️ Critical Troubleshooting Tips Check the "Patch" Files

The system is essentially telling you that the digital signature or checksum of the system software file (.cc) does not match what the BIOS/BootRom expects. 🛠️ Root Causes of Verification Failure

Bad sectors on the internal flash memory preventing a clean read. huawei s7721u recovery image verify failed link

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.

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 Change the to the new filename you just downloaded

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

In rare cases, newer VRP software requires a BootRom upgrade before it can "verify" the image. Usually, the .cc file contains the BootRom update, but if you are jumping too many versions ahead (e.g., V100 to V200), you may need an intermediate "bridge" version. 📋 Summary Checklist Access the emergency boot menu Format/Clean Flash Remove corrupted data sectors TFTP Transfer Reload a fresh, uncorrupted image Check Signature Ensure the version matches the hardware model 🛠️ Root Causes of Verification Failure Bad sectors

Connect your laptop to the of the SRU. In the BootRom menu, select Ethernet Submenu . Configure the IP parameters: Device IP: (e.g., 192.168.1.10) Server IP: (Your laptop IP, e.g., 192.168.1.11)

Try moving the console cable to the redundant SRU (if available) to see if the issue is isolated to one board. Upgrade the BootRom

Select and enter the exact filename of the Huawei software (e.g., S7700-V200R010C00SPC600.cc ). 4. Set the Startup File Once the transfer is successful: Go to Modify Startup Parameters .