EM7455 - Sierra Wireless - Linux

README.md

Fix EM7455 / Sierra Wireless Snapdragon X7 LTE / Dell Wireless 5811e (DW5811e)

Depending on your firmware version, identification might differ, also serial ports order might differ

Identification 413c:81c2

# picocom /dev/ttyUSB2
ATI
Manufacturer: Sierra Wireless, Incorporated
Model: EM7455
Revision: SWI9X30C_02.30.03.00 r7804 CARMD-EV-FRMWR2 2018/07/25 01:10:04
MEID: -redacted-
IMEI: -redacted-
IMEI SV: 17
FSN: LF818679700410
+GCAP: +CGSM

AT!USBVID?
!USBVID: 
413C

AT!USBPID?
!USBPID: 
APP : 81C2
BOOT: 81C1

AT!USBCOMP?
Config Index: 1
Config Type:  1 (Generic)
Interface bitmask: 0000010D (diag,nmea,modem,rmnet0)

AT!USBCOMP=<Config Index>,<Config Type>,<Interface bitmask>
  <Config Index>      - configuration index to which the composition applies, should be 1

  <Config Type>       - 1:Generic, 2:USBIF-MBIM, 3:RNDIS
                        config type 2/3 should only be used for specific Sierra PIDs: 68B1, 9068
                        customized VID/PID should use config type 1

  <Interface bitmask> - DIAG     - 0x00000001,
                        NMEA     - 0x00000004,
                        MODEM    - 0x00000008,
                        RMNET0   - 0x00000100,
                        RMNET1   - 0x00000400,
                        MBIM     - 0x00001000,
  e.g.
  10D  - diag, nmea, modem, rmnet interfaces enabled
  1009 - diag, modem, mbim interfaces enabled

  The default configuration is:
  at!usbcomp=1,1,10D

Set compatible USB PID VID

# picocom /dev/ttyUSB2

AT!ENTERCND="A710"
OK

AT!USBVID=1199
OK

AT!USBPID=9071,9070
OK

AT!USBCOMP=1,1,10D
OK

AT!RESET