Bluetooth fw update

Is it possible if sandisk can make a third party bluetooth compatablity Firmware Update under Enhancements

maybe my bluetooth 4.0 headphones will work with my 2.1 bluetooth version mp3 player

its not all bluetooth version 4 that dont work. In fact every headset I have tried other then my power beats work. I have linked a cheap BT 4.1 headset below that I have that works no problem. the issue you have is probably one of the few that have compatibility issues. 

MPOW magneto BT headphones