Use this method if your router is locked, unbranded, or unable to connect to the internet to fetch OTA (Over-The-Air) updates. Step 1: Download the Correct Firmware File
Open a web browser and type into the address bar. huawei b311-221 firmware download
Run the balong_flash.exe tool or use a flashing utility like Mendrugo to inject the bootloader file ( usbloader.bin ). Use this method if your router is locked,
Note: If the server says "No updates available," it usually means your ISP has not authorized a newer version for your specific batch of routers, even if a newer version exists elsewhere. huawei b311-221 firmware download