Based on forums (Whirlpool, 4pda, XDA):
Do not chase “newest” – chase “most proven for your tower’s bands.” The safest “best” is the firmware your router came with, provided it connects reliably. If you must upgrade, use a version confirmed working by others with the same hardware revision (check label: MF971RS - 1.0 or 2.0). zte mf971rs firmware best
Firmware is the software that is embedded in your device, controlling its operations. For the ZTE MF971RS, firmware updates are crucial for ensuring the device runs smoothly, efficiently, and securely. Based on forums (Whirlpool, 4pda, XDA): Do not
: If you are using a third-party SIM card, you may need to manually enable Roaming in the connection settings and verify your APN to get the best speeds. Based on forums (Whirlpool