If the router is unresponsive, you must use a tool like Huawei Balong Flash Image Editor or Huawei Multicast Upgrade Tool to force-flash the firmware over an Ethernet connection.
: Ensure you have a stable internet connection and do not power off the router during the process, as this can permanently damage it. huawei b311221 firmware download link
You can find the software through two main methods. If the router is unresponsive, you must use
This software is developed directly by Huawei or your specific network service provider (e.g., Vodafone, Orange, Telcel). It is digitally signed, stable, and highly secure. Custom or Unlocked Firmware If the router is unresponsive