Yes, see now there is the catch - there are only 3 different firmware versions:try reflashing to the other working firmware
1.02 (working but not entirely stable), 1.03 (also working but less stable, some new functions added) and the 1.04 (does not work at all with the modem, for some odd reason it refuses to connect).
I'm trying to figure out "what" makes this not work, for now the only thing I can think of is it's 4G mode - since it changes the APN (did I spell it correctly?) and other stuff.
The old modem was only 3G, but the ISP gives you 4G if you have a USB dongle for this.
The new APN is "4g.comviq.se". The old one was "data.comviq.se" (or similar). However if I recall correctly, is that when I use firmware 1.04, it gives me an extra "Comviq" in the list of Internet Service Providers.. The two other firmwares do not. Also, I think it had more options, say - there perhaps I need to manually add the APN and not use auto settings.
I work late everyday this week, so I don't have much time to go over it's settings, and where I work is not a good place to bring a computer and fiddle with. So I'll try in the evenings if I'm not to tired.
If nothing works, I'll get another router that supports the 4G. Or just pay the 400$ and get the fibre optical modem instead (feels like I'm wasting enough money already).
Other stuff I have tried - using an extended USB (2.0) cable, of around 2 meters. Have an extra - same length, but does not remove the issue that someone else had of "interference". I did not have that issue earlier, I still thing it's down to the router since the modem is working great (using it right now).
Good night!