RAK5010 factory reset

Hi
have tried a lot of config on my 5010, how do i make an factory reset on it, cant scan for network.

at+scan=cellular

+CME ERROR: 3
ÿÿÿ

Hi,

What version is your firmware?You can get it from:
https://downloads.rakwireless.com/en/Cellular/RAK5010/Firmware/

I am not clear what factory reset mean. Do you want to go back factory set? Just clean and flash it again with jlink.

I have made som change to LTE NB but cant find any network, trying to change back to 2G but not working.

I RUN this command to change to LTE NB
at+set_config=cellular:(AT+QCFG=“iotopmode”,1,1)
at+set_config=cellular:(AT+QCFG=“nwscanmode”,3,1)
at+set_config=cellular:(AT+QCFG=“BAND”,0,10,10)
at+set_config=cellular:(AT+QENG=“SERVINGCELL”)
at+set_config=cellular:(AT+COPS=?)

at+version
Firmware Version: RUI v3.0.0.7