Explorer Edge 2 hangs at 6.0.5


I´ve bought my Edge Explorer on July 22 and the device hangs at Software 6.05. 

Garmin Express brings me no possibility for installling a new Software Version. At least he gives me the new map version for 2023. 

I signed up for the beta program, but even then no new version is reported. 

Is there any chance to get a new Software Version?