Huawei B880-70v Firmware Update ((link))

If the update fails immediately after selecting the file, it usually means the firmware version you are trying to install is older than what is currently on the device, or it is the wrong hardware variant. Huawei routers generally do not allow "downgrading" firmware versions for security reasons.

: Connect your computer to the router via Wi-Fi or Ethernet. Open a browser and enter the default IP address (usually 192.168.1.1 or 192.168.8.1 ). huawei b880-70v firmware update