It is recommended to back up your current configuration before updating in case the router resets to factory defaults.

Often adds support for newer protocols (like IPv6) or improved Mesh roaming (802.11k/v/r). How to Update FiberHome SR120-A Firmware

SR120-A Smart Router Specifications | PDF | Wireless Lan | Ip Address

is a high-performance Dual-Band AC1200 smart router designed for the smart home market, prioritizing "FULL Gigabit, FULL Connection, and FULL Coverage". Its firmware serves as the critical operational layer, managing everything from basic network routing to advanced security protocols and mesh networking capabilities. Hardware Architecture and Firmware Environment

Here’s an interesting, critical take on the firmware based on user experiences (common in forums like Reddit, 4PDA, and tech communities):