Digi XBee 3 Cellular LTE-M User Manual page 226

AT commands
ATFOC
ATFOC clears all parameters back to their defaults as listed in the table above.
Example usage
Setting a parameter
ATFOSmyftp.server.com
OK
Reading a parameter
ATFOS
myftp.server.com
Initiating FTO OTA
ATFOI
OK
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
Firmware version/information commands
226