I'm using a FrSky D8R-II with my modded 9X and was wondering if that recent version need a firmware upgrade to V2 or if it's already in V2 ?
According to Frsky documentation:
Superiority of V2:
1) Four different tones corresponding to four alarm sources;
2) Improve the smoothness of servos when working with D8R;
3) Provide two PPM modes: HS (9ms) and FS (18ms).