I've just got hold of a Teltonika RUT955 and trying to get it to connect to the Internet using my Virgin Mobile SIM which works fine in my Android phone.
Since it doesn't recognise Virgin Media I thought I'd upgrade the Firmware....
the latest is
but when I tried upgrading I'm told that this version is older than the current which is RUT9XX_R_00.03.491.
Any suggestions as to what is going on here?