EM7355 to German Vodafone does not find any Connection

Hi,

I bought an EM7355 at Ebay for my Panasonic CF-53 MK4.
It could be installed on windows 10 but windows always reports “No connection”
Provider is Vodafone Germany.
Do I have to update the card firmware? If yes, how does it work?

Thank you for your help.

Did you install usb driver?

https://source.sierrawireless.com/resources/airprime/software/airprime-em_mc-series-windows-drivers-qmi-build-5087/

Here is the firmware:

https://source.sierrawireless.com/resources/airprime/software/airprime-em73xx_mc73xx-fw-package-build-4837/

You might also install the skylight connection manager: