If you want safe, legal alternatives, here are lawful options you can pursue:
Connect your computer to the router via a stable LAN/Ethernet cable. Never flash firmware over Wi-Fi. Step-by-Step Guide to Flashing Free Unlock Firmware Step 1: Find and Download the Correct Files huawei router b311221 unlock firmware free
PuTTY or TeraTerm manages direct command inputs. Step-by-Step Technical Guide If you want safe, legal alternatives, here are
The router is stuck in a boot loop or is bricked. Try reloading the original stock carrier firmware using the multicast upgrade tool to revive it. If you want safe
Select the unbranded firmware file in the first slot and the matching WebUI file in the second slot. Select the active COM port assigned to your router.