MC7455 no registration after firmware update

Sierra Wireless AirPrime Modem Card Topics
Post Reply
karolp1993
Posts: 1
Joined: Thu Oct 14, 2021 8:45 am
Has thanked: 0
Been thanked: 0

MC7455 no registration after firmware update

Post by karolp1993 » Mon Oct 18, 2021 7:00 am

Hello.
I have problem with two MC7455's after firmware update.
I used that script: viewtopic.php?t=72

After update modem lost IMEI so I used method from that post to recover IMEI: viewtopic.php?p=4795&sid=002b02fac6f9c1 ... 850d#p4795

I also tried to flash firmware manually by qmi-firmware update, I tried also with .exe from Sierra on windows.

Now, situation with both modems are pretty similar. Modem with recovered IMEI don't want to register in network, also signal quality is 0% and ONLY gsm-umts is supported. Modem only after update changed supported modes from gsm-umts, lte to gsm-umts what is strange.

What I noticed, when I want to set AT!SELRAT=06, AT answer is ERROR.

Logs from both Sierras:

Code: Select all

mmcli -m 3
  --------------------------------
  General  |                 path: /org/freedesktop/ModemManager1/Modem/3
           |            device id: ba39a52a627c7a7b02f5c469f06ae6f570cb45e3
  --------------------------------
  Hardware |         manufacturer: Sierra Wireless, Incorporated
           |                model: MC7455
           |    firmware revision: SWI9X30C_02.33.03.00
           |       carrier config: default
           |         h/w revision: MC7455
           |            supported: gsm-umts
           |              current: gsm-umts
           |         equipment id: 359072065791622
  --------------------------------
  System   |               device: /sys/devices/pci0000:00/0000:00:14.0/usb3/3-7
           |              drivers: cdc_mbim, qcserial
           |               plugin: sierra
           |         primary port: cdc-wdm1
           |                ports: cdc-wdm1 (mbim), ttyUSB0 (qcdm), ttyUSB1 (gps), 
           |                       ttyUSB2 (at), wwan0 (net)
  --------------------------------
  Status   |       unlock retries: sim-pin2 (3)
           |                state: searching
           |          power state: on
           |       signal quality: 0% (cached)
  --------------------------------
  Modes    |            supported: allowed: 3g; preferred: none
           |              current: allowed: 3g; preferred: none
  --------------------------------
  Bands    |            supported: utran-1, utran-3, utran-4, utran-5, utran-8, utran-2
           |              current: utran-1, utran-3, utran-4, utran-5, utran-8, utran-2
  --------------------------------
  IP       |            supported: ipv4, ipv6, ipv4v6
  --------------------------------
  3GPP     |                 imei: 359072065791622
           |        enabled locks: fixed-dialing
           |         registration: searching
  --------------------------------
  3GPP EPS | ue mode of operation: csps-2
  --------------------------------
  SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/2

Code: Select all

ATI
Manufacturer: Sierra Wireless, Incorporated
Model: MC7455
Revision: SWI9X30C_02.33.03.00 r8209 CARMD-EV-FRMWR2 2019/08/28 20:59:30
ESN: 12807520841, 8072C249
IMEI: 359072065791622
IMEI SV: 20
FSN: LQ933105050310
+GCAP: +CGSM

Code: Select all

AT!IMPREF?
!IMPREF: 
 preferred fw version:    02.33.03.00
 preferred carrier name:  GENERIC
 preferred config name:   GENERIC_002.072_000
 preferred subpri index:  000
 current fw version:      02.33.03.00
 current carrier name:    GENERIC
 current config name:     GENERIC_002.072_000
 current subpri index:    000

Code: Select all

AT!GSTATUS?
!GSTATUS: 
Current Time:  986              Temperature: 30
Reset Counter: 1                Mode:        ONLINE         
System mode:   WCDMA            PS state:    Not attached 
WCDMA band:    WCDMA 1700 
WCDMA channel: 1962
GMM (PS) state:DEREGISTERED     PLMN SEARCH    
MM (CS) state: IDLE             PLMN SEARCH    

WCDMA L1 state:L1M_ACQ          LAC:           0000 (0)
RRC state:   DISCONNECTED       UTRAN Cell ID: 02C53D9E (46480798)
RxM RSSI C0:    ---             RxD RSSI C0:  --- 
RxM RSSI C1:    ---             RxD RSSI C1:  --- 

Code: Select all

AT!ENTERCND="A710"
OK
AT!SELRAT=06
ERROR

Code: Select all

AT!BAND?
Index, Name,                        GW Band Mask     L Band Mask      TDS Band Mask
00, All bands,                      0002000007C00000 00000100330818DF 0000000000000000
Second piece after firmware update:

Code: Select all

--------------------------------
  General  |                 path: /org/freedesktop/ModemManager1/Modem/0
           |            device id: 23d5a0b50fca7cf994a2f2625b3e009b829c0798
  --------------------------------
  Hardware |         manufacturer: Sierra Wireless, Incorporated
           |                model: MC7455
           |    firmware revision: SWI9X30C_02.30.01.01 r7792 CARMD-EV-FRMWR2 2018/07/13 02:24:52
           |       carrier config: default
           |         h/w revision: 1.0
           |            supported: gsm-umts
           |              current: gsm-umts
           |         equipment id: 359072065789592
  --------------------------------
  System   |               device: /sys/devices/pci0000:00/0000:00:14.0/usb3/3-7
           |              drivers: qcserial, qmi_wwan
           |               plugin: sierra
           |         primary port: cdc-wdm1
           |                ports: cdc-wdm1 (qmi), ttyUSB0 (qcdm), ttyUSB1 (gps), 
           |                       ttyUSB2 (at), wwan0 (net)
  --------------------------------
  Status   |                 lock: sim-pin2
           |       unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (3), sim-puk2 (10)
           |                state: enabled
           |          power state: on
           |       signal quality: 0% (cached)
  --------------------------------
  Modes    |            supported: allowed: 3g; preferred: none
           |              current: allowed: 3g; preferred: none
  --------------------------------
  Bands    |            supported: utran-1, utran-3, utran-4, utran-5, utran-8, utran-2
           |              current: utran-1, utran-3, utran-4, utran-5, utran-8, utran-2
  --------------------------------
  IP       |            supported: ipv4, ipv6, ipv4v6
  --------------------------------
  3GPP     |                 imei: 359072065789592
           |        enabled locks: fixed-dialing
           |          operator id: 26003
           |         registration: idle
  --------------------------------
  3GPP EPS | ue mode of operation: csps-2
  --------------------------------
  SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/0
           |       sim slot paths: slot 1: /org/freedesktop/ModemManager1/SIM/0 (active)
           |                       slot 2: none

Code: Select all

ati
Manufacturer: Sierra Wireless, Incorporated
Model: MC7455
Revision: SWI9X30C_02.30.01.01 r7792 CARMD-EV-FRMWR2 2018/07/13 02:24:52
MEID: 35907206578959
IMEI: 359072065789592
IMEI SV: 16
FSN: LQ904605240310
+GCAP: +CGSM

Code: Select all

AT!IMPREF?
!IMPREF: 
 preferred fw version:    02.30.01.01
 preferred carrier name:  GENERIC
 preferred config name:   GENERIC_002.045_001
 current fw version:      02.30.01.01
 current carrier name:    GENERIC
 current config name:     GENERIC_002.045_001

Code: Select all

AT!GSTATUS?
!GSTATUS: 
Current Time:  198              Temperature: 31
Reset Counter: 1                Mode:        ONLINE         
System mode:   WCDMA            PS state:    Not attached 
WCDMA band:    WCDMA 2100 
WCDMA channel: 10762
MM (CS) state: IDLE             UPDATING       

WCDMA L1 state:L1M_PCH_SLEEP    LAC:           0000 (0)
RRC state:   DISCONNECTED       UTRAN Cell ID: 0C80BD14 (209763604)
RxM RSSI C0:   -60              RxD RSSI C0:  --- 
RxM RSSI C1:    ---             RxD RSSI C1:  --- 

Code: Select all

AT!ENTERCND="A710"
OK
AT!SELRAT=06
ERROR

Code: Select all

AT!BAND?
Index, Name,                        GW Band Mask     L Band Mask      TDS Band Mask
00, All bands,                      0002000007C00000 00000100330818DF 0000000000000000

I tried also AT!RMARESET=01 but without any change.
Of course antenna is ok, on another modems works fine.
Maybe someone knows what's the problem is?

EDIT: I reflashed first modem with FW version that came from the factory. Now registration in network is okay but still no connection. On both modules I have:

Code: Select all

AT+COPS=?
+COPS: (1,"Orange PL","Orange","26003",2),(1,"T-Mobile.pl","TM PL","26002",2),(1,"Plus","PLUS","26001",2),(1,"Play","Play","26006",2),,(0,1,2,3,4),(0,1,2)

OK
AT+COPS=1,2,"26003"
+CME ERROR: 30
AT+CSQ
+CSQ: 26,99

Post Reply