The is an old device (2011–2014 era). If you need better performance or security, consider upgrading to a modern router. For basic use, your current firmware is likely fine, but if you must update, always use ISP-provided files.
rather than Wi-Fi to prevent connection drops during data transfer. 2. Accessing the Management Interface To manage updates, you must log in to the router: Connect your device to the Update Software in HUAWEI HG255s
Existing configurations (Wi-Fi names, passwords) are typically preserved, but it is good practice to verify connectivity. How do I update the firmware version of my HUAWEI router The is an old device (2011–2014 era)