Author：Sam Publish time：2013-11-20
X3 Firmware version FW2.1 fixed the following issues in version FW2.05:
1. Fixed issue with playback of 192kHz tracks where repeated plugging and unplugging of headphones may cause the sound to change pitch.
2. Fixed issue where the song's progress bar does not move when fast forwarding.
3. Fixed issue where X3 produces "pop" sounds when used as USB DAC with certain computers.
(glitches may still occur with improper computer configuration).
4. Improved file sorting in browse mode, being now compatible with songs exported from iTunes.
X3 USB DAC Driver
Complete User Manual