Were you using the newer extensions via N9QTweak or the old one at the start of this thread? I'm using the old one 0.0.5.6 and everything works as long as you don't install FasterN9 (breaks the BT switching).

The one time I tried the N9QTweak version the repos seemed to get screwed up (nothing would update or install) and it didn't uninstall properly via the script - hence I'm onto my spare phone and the other one needs reflashing.... One bitten twice shy