How to change a theme of my MP4

[yanuar.s]

That's my mp4 with 1.8 inch lcd.

Wilson v 9.0.50 firmware

Is it already there the software to modify the theme of this MP4?

Would you please to inform me.

[yanuar.s]

I've tried using s1fwx v32 to extract, it doesn't work.

Using s1fwx v30 it can be read but when i tried to change the theme using s1res v19 or s1res v21, it can not open the dump.bin file

Any one have a solution yet?