Music playback:
Added Jukebox Features: (1) Supports "scrolling display of TAG information" (2) Supports "scrolling display of highlighted item in playlist view" (3) Supports "Variable speed FF and FB" (4) Supports "ID3v2.2"
Added Jukebox display "remaining time" function.
Other bug fixes and feature enhancement:
Fixed PS2002 error message when PS2002 doesn't exist or ID error.
Fixed battery monitoring bug.
Decreased LCD backlight while
