The Huawei B311-221 supports updates, which is the safest method:
Click and select the downloaded firmware file from your computer. Click Update to initiate the flashing process. huawei b311-221 firmware download
If you have downloaded a .bin or .zip firmware file, follow these steps to flash it: Step 1: Preparation The Huawei B311-221 supports updates, which is the
Common versions (region/carrier specific): The Huawei B311-221 supports updates
Never unplug the power adapter during an update. A sudden power loss mid-flash will corrupt the partition table.