Hi, I can not make it work with the new ROM either. Worked great with my 2.17 rom.
When I try via USB I first get an end data call message, click on Flight mode, turn flight mode back off, then it tries to connect, but I get Error 680 No Dial Tone. With BT I get Error 633 Modem Already in use or not configured properly.
I hope someone can get this working!!!