Sending AT command to my Samsung S20 to find out the modem version. In response I get +CME Error:PACM(CP),UNREGISTED. The commands are sent via Realterm. I also sometimes get a +CME Error:PACM(AP),NOT_ALLOWED_CRO response. How to find a detailed error description?
My goal is to find commands to communicate with eSIM. To do it I want to find a specs for the modem.
The full interaction process:
AT
OK
ATI
CME Error:PACM(CP),UNREGISTED
Tried to send commands via Realterm and SimCOM. I also listened to the COM port through the Serial Port Monitor. All commands are sent and responses are read.