MC7455 mmcli modem status Disable

IoT Modules MC/EM Series
1

Hello,
I’m using the MC7455 in Canada (already tried different telcos).
The Linux Modem Manager shows the device status as “Disabled”, and Power as “Low”.
AT CREG and CGREG both returning 1,6.
Does anyone have a clue why this is happening?

Further investigation, it seems that there is a mismatch on firmware:

!IMPREF:
 preferred fw version:    02.20.03.00
 preferred carrier name:  GENERIC
 preferred config name:   GENERIC_002.017_000
 preferred subpri index:  000
 current fw version:      02.33.03.00
 current carrier name:    GENERIC
 current config name:     GENERIC_002.017_000
 current subpri index:    000

 fw version mismatch

OK
2

you need to upgrade the FW:
https://source.sierrawireless.com/resources/airprime/minicard/74xx/em_mc74xx-approved-fw-packages/#sthash.I9NeyOG4.dpbs

3

Thanks for the info.
Do you know any tutorial I can use to flash the module with the new firmware?
The module is connected to a Linux embedded system with Ubuntu on it.

4

You need to use fwdwl in MBPL SDK and driver

You can download the MBPL here:
https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/

My testing log:


owner@ubuntu:~/QMI/MBPL/MBPL_SDK_R25_ENG3-lite.bin/SampleApps/lite-fw-download$ ls /home/owner/Desktop/MC7455_FW/9999999_9904609_SWI9X30C_02.38.00.00_00_GENERIC_002.082_000/
SWI9X30C_02.38.00.00.cwe  SWI9X30C_02.38.00.00_GENERIC_002.082_000.nvu



owner@ubuntu:~/QMI/MBPL/MBPL_SDK_R25_ENG3-lite.bin/SampleApps/lite-fw-download$ sudo ./bin/fwdwl-litehostx86_64 -m 4 -d /dev/ttyUSB0 -p /dev/cdc-wdm0 -t 2 -f /home/owner/Desktop/MC7455_FW/9999999_9904609_SWI9X30C_02.38.00.00_00_GENERIC_002.082_000/  -w SWI9X30C_02.38.00.00.cwe  -n SWI9X30C_02.38.00.00_GENERIC_002.082_000.nvu
Application version: 1.0.2111.0
INFO: QDL Port  :  /dev/ttyUSB0
INFO: Device Path: /dev/cdc-wdm0
INFO: FW  Path  :  /home/owner/Desktop/MC7455_FW/9999999_9904609_SWI9X30C_02.38.00.00_00_GENERIC_002.082_000/
Target image Info:
Carrier    :GENERIC
FW Version :02.38.00.00
Model ID   :SWI9X30C
Package ID :000
PRI Version:002.082
SKU        :9999999
Switching device into download mode ...
No need to download any images.  Device will reboot for image switching.
Waiting for modem to disconnect from the host ...
Modem disconnected from host.
Waiting for modem to come up in ONLINE mode ...
Modem is now in ONLINE mode ... 
FW update status: Successful
FW info from modem:
Model ID            : EM7455
FW Version          : SWI9X30C_02.38.00.00
Carrier Name        : GENERIC
Carrier PRI Revision: 002.082_000
Firmware Download Process completed
Exiting Application!!!
owner@ubuntu:~/QMI/MBPL/MBPL_SDK_R25_ENG3-lite.bin/SampleApps/lite-fw-download$