Hi,
we have a custom board with nrf52840 and nrf9160. NRF9160 has mfw_nrf9160_1.3.3 and serial_lte_modem application. I try to set modem system mode to support both LTE-M and NB-IoT modes with no preference to either with AT command "AT%XSYSTEMMODE=1,1,0,0", but this returns "ERROR". I have set the modem to shutdown state with AT command "AT+CFUN=0".
When I send "AT%XSYSTEMMODE=1,0,0,1" or "AT%XSYSTEMMODE=1,0,0,1" it returns "OK", but it seems that no other combination (at least one with NB-IoT enabled) is working.
How can I set the modem to support both LTE-M and NB-IoT modes without preferring either?
