[Upa Mpx!]

Hi guys
I've got a mpx player named Foston, model FS58A.
I was trying to replace the boot screen with an animation, once the original one is a image with the foston logo. All the files in LOGO.RES was the same type, a picture with blue and white dots. When I changed the pictures from LOGO001 to LOGO016 with an animation, this not appeared on boot screen, but an animation with no definition.
I was thinking I could update my firmaware 3.5.35 by 3.5.37 to get an animation on boot screen, but I really don't know if it's secure.
The shut down animation works well.
My mpx (1GB):
device = 'S1 Mp3 Player'
manufacturer = 'Wilson Co. Ltd.'
bootflash type = 'F641'
firmware version = 3.5.35
Could anyone help me?

Thanks!