Usually named Huawei_E5172_Multicast_Upgrade_Tool.exe or simply embedded in the standard Huawei Router Update Broadcast tool.
The upgrade tool requires a firmware file, usually ending in a .bin or .hmf extension.
Once the progress bar reaches 100% or the router lights stabilize, click on the PC tool and restart your router. Troubleshooting Common Upgrade Issues
Always source your firmware and tools from reputable modem unlocking forums (like ModemUnlockable or GSMHosting) where community feedback verifies the file
This signifies a soft brick. Ensure you have the exact firmware match for your sub-model number, clear your PC's network cache, and retry Method B. It can sometimes take multiple attempts for the bootloader to catch the multicast stream. If you need help finishing the upgrade, tell me: What is the exact sub-model on your device sticker?
The flashing process is complete .