The ZTE F602W is an optical network terminal (ONT) typically provided by internet service providers (ISPs). There is no official "ZTE F602W Firmware BETTER" edition. This phrase usually pops up on unofficial download hubs or forums promising unlocked features or better speeds.
If you are looking to improve speed and stability without a full firmware overhaul: WLAN Security : Change your authentication to encryption for better security and speed. Channel Selection Zte F602w Firmware BETTER
You can update your ZTE modem using two primary methods through the device's web management interface: Online Update : Manually check for official updates by navigating to System Update within the router's admin page. Manual (Offline) Update Download the specific firmware file from the official ZTE Support site or your Internet Service Provider's (ISP) portal. Log into the router admin page. Maintenance Firmware Update , select the downloaded file, and click Important Precautions Backup Your Data The ZTE F602W is an optical network terminal
V9.0.10P2N1) often have known backdoor credentials (root:Zte521 or admin:admin). Newer builds patch this.iptables command and you lose WAN access entirely, requiring a factory reset (or worse, a TFTP recovery).Get a Secondary Router: Connect a high-performance router (like a TP-Link Archer or Asus) to the 1GE port of the ZTE. The Hunt: This is where "better" firmware comes in