Before firmware upgrade :
1. Make sure of your AK100’s battery level at least over 80%.
2. Make sure of your AK100’s memory size at least over 50 MB.
3. Don't remove the connection between PC & AK100 during transferring hex data.

[Newly added functions]
1. Home screen & theme (Black , Silver , Redwine)
2. Gapless playback
3. Volume boost
4. Setting menu for album art
5. Sleep timer
6. Format function of internal memory
7. Hot key that directly moves to home screen.

[Improvement]
1. Faster system operating speed