@Chris_Allgaeu
Having the exact same behaviour, also have the fingerprint reader, but adding new fingerprints does not work for me with SIP firmware 3.3
I also want to go back to the SIP firmware from April 2017 - tcp port 3800 is not listening on the VTO, tcp/37777 is open.
ssh access works, but limited only to some commands. idea was to start upgraded daemon so we have tcp/3800 back in action, but no luck..
I read that telnet seems to be disabled in a startup script, no idea how to get this enabled.
Were you able to downgrade the firmware lately?
Just saw you on some other forums with the same question