Ok, first some more info:
I have 2 phones, both connected to their individual obi110's.
Device x (calling it that for now) has firmware 1.3.0.2774 (was upgraded a few months ago). Works fine.
Device y has firmware 1.3.0.2776, was bought that way a few months ago. Has issues..
The issue: When I call with my cellphone to y, it rings, shows who's calling, but when I pick up y's phone, it says it connects, but my cellphone keeps ringing. SOMETIMES it does connect after a second or so.
What is wrong.. and how can this be fixed? Can I downgrade.. and if so how?