: Check your router's administrative settings for an official firmware update button. If your ISP manages the device, they will push official, safe updates to it automatically.
ZTE F602W Firmware: Download and Update Guide Zte F602w Firmware BETTER
I've seen more users brick their F602w chasing "better" firmware than I've seen succeed. The best firmware is the one that keeps your internet on. If it's unstable, demand a replacement from your ISP. : Check your router's administrative settings for an