Statements before upgrade:

Though this firmware is based on Android 5.1, it still needs time for perfection. Therefore, we have defined it the public beta version. You can choose to upgrade or not according to your personal preference. Also you're welcomed to share your opinions and suggestions about this firmware with us. This firmware upgrade can only be realized by burning with the upgrade tool. All data on X7 will be erased after upgrade. So please backup your important data stored on X7's internal storage and remove the SD card before the upgrade.

The FW3.0beta (Android5.1.1) solves the problems left from the FW2.0 (Android4.4.4) and adds the following functions:

No SRC for third-party music applications Adopted the incremental media lib update (only new songs will be updated), and added recently played playlist Added sorting by alphabetical order (among different languages)/file name/track number /number of tracks in album. (Both ascending and descending are supported) Added the Maximum volume and customized volume setting in FiiO music Added the continuous volume adjustment when screen-off Added the manual OTA upgrade(Technical support->Firmware Update->Online Upgrade, OTA upgrade will be available next time) Added instant switch between Android mode and Pure music mode (no reboot required) CUE tracks can be added to the playlist directly Press the Play button to wake up X7 from hibernation, press again to play music without lighting up the screen. Improved the USB DAC delay Improved the power consumption of standby and music play, playtime can last for 90 min longer. Improved the pull-down menu, where common used functions can be switched directly Improved the stability of Google Play.