Hi - I did not update the installer files, just the app was updated automatically via the Google Play Store. Not sure which installer files I used, must be about a year ago when I first installed your rSAP app.
My Galaxy S2 is on Android 4.1.2, it uses stock ROM I9100XXMS2. Latest official update as of today.
FYI after downgrading to version 2.3.3 my phone works again in the car, no other changes done.
Thanks for your support.