Modern firmware versions enable EasyMesh support, allowing the F670Y to act as a mesh network controller.
If your ZTE F670Y is already in a reboot loop due to heat damage: zte f670y firmware hot
Search for a known "cool" firmware. As of 2025, V9.0.8P3N7 and V6.0.4P2T9 are reported as thermally stable. Modern firmware versions enable EasyMesh support
Try common default credentials found on the ZTE support label located on the bottom of the device. zte f670y firmware hot