[sswajeta]

ok i wanna change the theme of my mp4 player
in the mp3 player firmware upgrade tool program it shows this:
Device name: LISONG Mp3 player
Productor: Wilson Co. Ltd.
Version: 9.0.48
technically my screen is 1inch big, but the width of the whole player is 1.5inches

now ive searched around and ive found out that i cant dump my current version.

How can i change my player's theme if i cant dump/edit my firmware?
Also, what is the difference between the firmware for 1.5inch and 1.8 inch player?
Last, what is the difference between the 9.x.xx firmwares and the 3.x.xx ones?