If none of these methods work, the issue may be hardware-related (such as motherboard or flash memory failure), and you should visit an authorized Huawei Customer Service Center .
Since the link provided by the device usually fails, Huawei recommends the following official recovery paths: Huawei phone “failing verification error” - Reddit
Select your network. The device will automatically search for, download, and install the matching firmware package. Step 2: System Restoration via HiSuite (PC/Mac)