Unfortunately no, but we found out that the modem works when sending AT commands via serial interface. See the SerialPassthrough sketch in: Portenta H7 - Cat. M1/NB shield does not connect over LTE Cat-M1 - Portenta / Portenta CAT.M1/NB IoT GNSS Shield - Arduino Forum
Using this with Google results:
and
We could confirm that we are able to unlock the SIM and conntect to the network.
So there seems to be a major bug in the pre-compiled library.