1. How to access the storage/SD card after connecting the F20 to the computer?
F20 uses the MTP protocol and couldn’t be properly recognized until the MTP driver installed. Please make sure F20 under USB mode, then connect F20 to computer to recognize it.
2. How can I use USB DAC function?
First switch the USB mode to USB DAC mode (F20->Settings->Switch USB mode to DAC). Then, connect the F20 to your computer via USB to use it as a USB DAC.
(You can directly copy the DAC driver stored in the 32GB memory card that comes with the F20)
3.Why my new F20 only getting sound one channel out of the corded earbuds?
The new player has a slightly tighter headphone jack, just plug it with pressure and it will be easier to plug in after few uses.
4. Why I cannot connect my Bluetooth headphone to the F20?
When using the Bluetooth headphone with the F20 for the first time, need pair the two devices. Please make sure that the Bluetooth headphone is in pairing mode (just like the very first time that you use the Bluetooth headphone with other devices).
5. Can this player work with iTunes? Is it compatible?
No, the player doesn’t compatible with iTunes. This functions more like an external hard drier. You simply plug it in, an option to open it as a folder pops up, and you simply drag and drop your music.