We developed a custom board with an nRF9161. During board bringup I want to test if the modem can connect via Cellular. I flashed the modem_shell firmware. The modem reports "Modem domain event: No IMEI" and a connection is not established:
*** Booting nRF Connect SDK v3.5.99-ncs1-3-gff2154892f8e *** Reset reason: PIN reset MOSH version: v2.6.0-6-g0b9d380becf6 MOSH build id: custom MOSH build variant: dev mosh:~$ Modem domain event: No IMEI Network registration status: searching Currently active system mode: LTE-M LTE cell changed: ID: 23236886, Tracking area: 59630 mosh:~$ at AT+CGSN ERROR mosh:~$ at AT+CGMR mfw_nrf91x1_2.0.0 OK
I tested with modem firmware v2.0.0 as well as v2.0.1 with the same result. If I run the same firmware on the nRF9161dk board, it connects to the cellular network as expected.
I know that the nRF9161 supports writing the IMEI, however, I would like to use the default IMEI. Is there a documentation which explains this feature in detail?