If you intend to replace the stock firmware with OpenWrt, you can find the latest compatible .bin files for the ramips/rt305x architecture on the OpenWrt Wiki .
Malware: Files from unofficial sources may contain scripts that compromise your network security. zte mf283u firmware update link
If you’re looking for a firmware update link for the (4G router), here’s the most reliable path forward: If you intend to replace the stock firmware
: Go to Settings > Device Settings > Update Management . zte mf283u firmware update link
) into a web browser and log in with your admin credentials. Navigate to Settings Device Settings Update Management Check for Updates : Click the