Brick RM520n Firmware

The RM520N-GL Ethernet driver is not working properly, it works sometimes my restarting the ethernet driver via ADB Shell. Internet is works, and can even ping through the adb shell via usb. the only problem is that the ethernet driver doesn’t start. I may have misconfigured something on the adb shell. I also flash several firmware updates but still the same. is there a way to wipe the data back to original settings? I tried **AT+QPRTPARA=3,AT+QCFG="ResetFactory"AT+CFUN=1,1.**but still doesn’t work. Thank You!

Dear @NullShadow
Do you try to configure via AT command?

at+qeth=“eth_driver”