If your router is partially unlocked or supports local updates: Log into the Web Interface. Navigate to . Upload the .bin or .upd file.
Look for firmware starting with version 10.0.x.x or 11.0.x.x . huawei b311s220 unlock firmware upd
After unlocking, you must manually enter the APN settings for your new carrier under the "Dial-up" menu. If your router is partially unlocked or supports
You often need two files: the Firmware (BIN/UPD) and the WebUI . The WebUI provides the actual dashboard interface you see in your browser. huawei b311s220 unlock firmware upd
Some newer versions (2021+) have a locked bootloader that prevents USB flashing.
If the web method fails, you must use the "Balong USB Downloader" tool:
Do not skip these steps, or you may permanently damage your router: