You should see a prompt for a or NCK . Enter the code you obtained and click Apply .
You can verify your current firmware version by navigating to Advanced > System > Device Information in the browser interface. How do I update the firmware version of my HUAWEI router Huawei Router B311-221 Unlock Firmware
Flashing unlock firmware is not a click-and-run operation. While the Huawei B311-221 is notoriously difficult to permanently brick (it has a rescue mode), you still face three risks: You should see a prompt for a or NCK
Using third‑party tools and unlocking services Huawei Router B311-221 Unlock Firmware
is often tied to specific Internet Service Providers (ISPs), it may require specific firmware versions or external services to allow SIM cards from other networks Method 1: IMEI-Based Unlocking (Official/Service-Based)