If the carrier refuses, you can use specialized services like DirectUnlocks or MobileUnlocks . These services typically charge a small fee ($3–$8) and deliver the code via email based on your IMEI. 3. Applying the Unlock How do I update the firmware version of my HUAWEI router
Official firmware updates for the Huawei B311-221 are typically released to fix security vulnerabilities or improve LTE and Wi-Fi performance. Query the software version | HUAWEI Support Global huawei router b311221 unlock firmware hot
For most B311-221 units: