[Warning]
Before firmware upgrade :
1. Make sure of your AK120’s battery level at least over 80%.
2. Make sure of your AK120’s memory size at least over 50 MB.
3. Don't remove the connection between PC & AK120 while transferring hex data.

[Newly added function]
1. Comfortable USB mode
   : USB mode can be changed when the AK120 is connected to PC via USB cable.
     USB DAC <-> Removable disk, Charge battery <-> USB DAC or Removable disk (Settings - USB mode)
2. Folder playback
   : On the top of each folder, 'Play all' key is added, which enables to play all songs and songs
     in sub folders in the selected folder.
3. 32bit wav (stereo) file supported

[Improvement]
1. Enable to power off at charge & play mode - (Also applied for auto power off and sleep off)
2. Enable to choose home themes (Basic 1 type + Black, Silver and Redwine)
   (Settings - Advanced - Home Screen Theme)
3. DSF files are shown in MQS menu.