Nighthawk m2 sim card not installed

[gardyanofgalaxy]

Hello,

Hello, I have the following problem, my router does not recognize the SIM card (Nighthawk M2)
I wanted to reinstall the firmware, but I can't find it on the netgear website. And I can't get internet with the router. Do you have a solution for this?

[plemans]

Did you contact your sim card supplier to see if your sim is appropriate for the device? 

And that you have the proper APN settings setup? 

[gardyanofgalaxy]

Thanks for the answer.

I know that overnight it will no longer work. I use Vodafone. However, it doesn't work with any SIM card. Is there a way to update the firmware. It doesn't work without the internet. or do you have a backup file for me?