: Power off the router and insert a SIM card from a different network provider.
Log into your router's web interface (default IP: 192.168.8.1 or 192.168.1.1) and navigate to or About . Note down: huawei b311221 unlock firmware top
A good quality USB Type-A to USB Type-A cable (or USB-C depending on specific B311 revision) is needed. Remove SIM/SD Card: Take them out before starting. Phase 2: Flashing Procedure : Power off the router and insert a
For power users seeking deeper structural controls—such as editing IMEI data, modifying TTL (Time to Live) values to bypass hotspot data throttles, or enabling hidden antenna ports—flashing custom or universal stock firmware is necessary. Unlock Modem B311-221 - Facebook Remove SIM/SD Card: Take them out before starting
: Look for the 15-digit number on the sticker at the bottom of the router or in the admin panel under Device Information .