YES THERE IS A WAY I MAKE 2 COSTUME THEMES FOR MY 3.71M33
ALL YOU NEED IS:
1: IMAGE EDITOR (I USED PHOTOSHOP 7.0)
2: COSTUM THEME CONVERTOR v 1.0.0.0.0 (its for cfw 3.71 m33)[ known bug you cant make a background with solid black (it will freeze)]
when you ready press f5 or click file > export
then connect your psp goto PSP > THEME (make a new folder if you dont have) and paste the .ptf there.
disconnect your psp goto settings > theme settings > theme and select your theme.
if you want to download my themes you can from:
RapidShare: Easy Filehosting RapidShare: Easy Filehosting
BTW: no flashing required
NB:sorry for my bad engliish