Em7455 can't connect to LTE

Following by instruction from this forum

  • Download the dell driver (Communications_Driver_R9YXH_WN32_7.8.4376.507_A01.EXE)
  • Install the dell driver on Win7 dell laptop
  • Extract the firmware using 7zip from the dell driver and use 7zip to get the 7455 folder.
  • Upgrade the firmware using:
    – fdt.exe -d 9x30 -f SWI9X30C_1.08.07.00.cwe SWI9X30C_01.08.07.00_GENERIC_001.007_000.nvu
  • Change PID and VID to make generic using:
    – AT!UDPID=9071,9070
    – AT!UDVID=1199
    – AT!RESET
  • Uninstall the dell driver ( Communications_Driver_R9YXH_WN32_7.8.4376.507_A01.EXE)
  • Install to the latest Sierra Generic windows driver (GenericDriverSetup_4773.exe)
  • Upgrade to the Sierra generic firmware 9999999_9904609_swi9x30c_02.24.05.06_00_GENERIC_002.026_000
    – fdt.exe -d 9x30 -f SWI9X30C_02.24.05.06.cwe SWI9X30C_02.24.05.06_GENERIC_002.026_000.nvu
  • Run AT!PRIID command to point to the firmware and done?

i got matching in carrier name and upgrade to latest Generic software
but module still not working

at!impref?
!IMPREF:
preferred fw version: 02.32.11.00
preferred carrier name: GENERIC
preferred config name: GENERIC_002.064_000
preferred subpri index: 000
current fw version: 02.32.11.00
current carrier name: GENERIC
current config name: GENERIC_001.007_000
current subpri index: 000

config name mismatch

OK
at!priid?
PRI Part Number: 9904609
Revision: 002.064
Customer: GENERIC

Carrier PRI: None

at!image?
TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID
FW 1 GOOD 1 0 0 ?? 02.32.11.00?
FW 2 EMPTY 0 0 0
FW 3 EMPTY 0 0 0
FW 4 EMPTY 0 0 0
Max FW images: 4
Active FW image is at slot 1

TYPE SLOT STATUS LRU FAILURES UNIQUE_ID BUILD_ID
PRI FF GOOD 0 0 0 001.004_000 01.08.07.00_ATT
PRI FF GOOD 0 0 0 002.064_000 02.32.11.00_GENERIC
PRI FF GOOD 0 0 0 000.003_000 01.08.07.00_SPRINT
PRI FF GOOD 0 0 0 000.004_000 01.08.07.00_VERIZON
Max PRI images: 50

OK
at!PCinfo?
State: Low Power Mode
LPM voters - Temp:0, Volt:0, User:0, W_DISABLE:0, IMSWITCH:1, BIOS:0, LWM2M:0, OMADM:0, FOTA:0
LPM persistence - None

OK