Not getting port(USB) for EM7455 modem

IoT Modules MC/EM Series
1

i flashed the firmware to latest and still cant get the usb(com) for the modem here are all the command i tested can you please help me i am using windows 10 and Sierra ME7455?
Send:AT

Recieve: AT
Recieve: OK

Send:ATI

Recieve: ATI
Recieve: Manufacturer: Sierra Wireless, Incorporated
Recieve: Model: EM7455B
Recieve: Revision: SWI9X30C_02.33.03.00 r8209 CARMD-EV-FRMWR2 2019/08/28 20:59:30
Recieve: MEID: 35344908075109
Recieve: IMEI: 353449080751094
Recieve: IMEI SV: 20
Recieve: FSN: LF115174840110
Recieve: +GCAP: +CGSM
Recieve: OK

Send:ATI3

Recieve: ATI3
Recieve: Manufacturer: Sierra Wireless, Incorporated
Recieve: Model: EM7455B
Recieve: Revision: SWI9X30C_02.33.03.00 r8209 CARMD-EV-FRMWR2 2019/08/28 20:59:30
Recieve: MEID: 35344908075109
Recieve: IMEI: 353449080751094
Recieve: IMEI SV: 20
Recieve: FSN: LF115174840110
Recieve: +GCAP: +CGSM
Recieve: OK

Send:AT!ENTERCND=“A710”

Recieve: AT!ENTERCND=“A710”
Recieve: OK

Send:AT!IMPREF?

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

Send:AT!USBCOMP?

Recieve: AT!USBCOMP?
Recieve: Config Index: 1
Recieve: Config Type: 1 (Generic)
Recieve: Interface bitmask: 00001009 (diag,modem,mbim)
Recieve: OK

Send:AT!PRID?

Recieve: AT!PRID?
Recieve: ERROR

Send:AT!PRIID?

Recieve: AT!PRIID?
Recieve: PRI Part Number: 9909767
Recieve: Revision: 001.000
Recieve: Customer: Generic-M2M
Recieve: Carrier PRI: 9999999_9904609_SWI9X30C_02.33.03.00_00_GENERIC_002.072_000
Recieve: Carrier PRI: 9999999_9904594_SWI9X30C_02.32.11.00_00_ATT_002.070_000
Recieve: Carrier PRI: 9999999_9904779_SWI9X30C_02.32.11.00_00_SPRINT_002.062_000
Recieve: Carrier PRI: 9999999_9904780_SWI9X30C_02.33.03.00_00_VERIZON_002.079_001
Recieve: OK

Send:AT!USBINFO?

Recieve: AT!USBINFO?
Recieve: VID: 0x1199
Recieve: APP PID: 0x9071
Recieve: BOOT PID: 0x9070
Recieve: Manufacturer: Sierra Wireless, Incorporated
Recieve: Product: Sierra Wireless EM7455B Qualcomm?? Snapdragon??? X7 LTE-A
Recieve: OK

Send:AT!USBPID?

Recieve: AT!USBPID?
Recieve: !USBPID:
Recieve: APP : 9071
Recieve: BOOT: 9070
Recieve: OK

2

What do you mean?
didn’t you already have the AT command port now?

3

there is no com port for the modem in the ports section in device manager , i am trying to find the port in the windows application which no luck?

4

If there is no port, how did you enter AT command above?

5

I am new in the c# development, under ports i only have DM port COM6 and NME Port COM6 nothing for modem. Modem is showing in modem section but not showing in port section. I used at commands directly form the modem with Huawei terminal modem?

6

you don’t need to care about modem section or port section.
You just need to open the correct COM port for AT command communication

7

If I forget the modem how do i find out which com is for AT command?

8

you can try all the COM port to send “AT” and see which one has OK response

9

What is the AT command to change EM7455 mode to NMEA, AT. I only need two of them?

10

You can try


AT!entercnd="A710"
aT!USBCOMP=?
At!usbcomp?

But i remember DM port cannot be disabled