Once finished, clear out any cached instructions by performing a hard hardware reset. Press a physical pin into the "Reset" hole on the back of the device for 10 seconds while it is powered on. Optimizing the Router Post-Firmware Update
Often caused by an improper flash, especially when using the "ZTE Framework" method. The fix is to follow the full, correct serial+TFTP method to reinstall OpenWrt. zte mf286d firmware