Please I think that I may be facing similar issue. Just that in my case I think that the MODEM is in DIP mode. In windows adapter setting.My it see’s the card as ETHERNET adapter and I have tried several times to reset the modem to factory setting or update the firmware to QMI so that widows may recognise the card as cellular card.
Please how do I know the OEM password of the card? So that I can try same command you shown Salvatorenoveli. Also I will like to know if I should use 68A2 for AT!UDPID? For now I am only able to connect to the internet via AirCard Watecher