I think i give it up.
i flashed now back the 01.08.07 firmware from Dell and the card works instantly.

i follow this thread: https://forum.sierrawireless.com/t/firmware-updating-dell-5811e-with-ancient-firmware-swi9x30c-00-08-02-00/12829/35

fdt2.exe -d 9x30 -f 1102424_9904336_EM7455_01.08.07.00 ...

Hello,

i already read your document 100 times but can't find any solution for my problem in them.
My COM ports are working and i can connect via Terminal to the card. I also can flash the card, but the PRI will not be activated on the card.
i tried now to flash several times again, but again the ...

Hello again,

after playing arround now 2 more hours i got it to work to rebrand my DELL DW5811e module to the Sierra generic one.

I flush the Images and reflashed the module with the latest Sierra Generic firmware:
9999999_9904609_SWI9X30C_02.32.11.00_00_GENERIC_002.064_000

I also installed the ...

Hello,

i am running out of order with debugging the last 2 days but can't find any solution.

I am using a Dell Latitude E7470 notebook and bought over ebay a Dell DW5811e LTE module, which is a branded Sierra MC7455. I use Windows 10 in latest version as OS.

So far so good, it worked fines ...