Anyone had any luck getting the 32 channel hack  to work with Android GO4 v4.1.4 ?

DJI have much better checking now.  In order to do that, you will have to move to a different ( read "hacked" ) APK.     Also, the 32 channel hack really falls way outside the bounds of FCC/EC, and so far I haven't found that it helps any better than getting a good set of antennas to help clean up your signal/noise ratio.