Quactel RM520N firmware preferences

[Pradeep Gopanapalli]

Hello Aleksander,

Good morning.
We are using Quactel RM520N in openwrt using ModemManager(1.16) ,
is there any way to select or list firmware on the module using mmcli .
For eg: In EM74xx we can use IMPREF to select image for carrier like AT&T ,
Verizon etc.
I tried following AT commands which works for  SierraWireless EM modules and
these commands are failing for Quactel RM520N module.


>>
mmcli -m a --command='AT+IMPREF?'
error: command failed: 'GDBus.Error:org.freedesktop.ModemManager1.Error.MobileEquipment.Unknown: Unknown error'
vc-edge:~# mmcli -m a --command='AT+IMAGE?'
error: command failed: 'GDBus.Error:org.freedesktop.ModemManager1.Error.MobileEquipment.Unknown: Unknown error'

mmcli -m a --firmware-list
  ----------------
  Firmware | list: n/a
>> mmcli -m a
 Hardware |            manufacturer: Quectel
           |                   model: RM520N-GL
           |       firmware revision: RM520NGLAAR01A05M4G
           |          carrier config: CDMAless-Verizon
           | carrier config revision: 0A010126
           |            h/w revision: 20000
           |               supported: gsm-umts, lte, 5gnr
           |                 current: gsm-umts, lte, 5gnr
           |            equipment id: 868371050112446
  -----------------------------------

Thanks,
Pradeep G
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