i downloaded version 3.70 today and its for both psps
click here to see features
it has custom themes
download some @t http://sfc2000.netfast.org/psp_Themes/
i like the cookie theme
remember highlight theme link then press triangle then click on File then Save target link in the folder PSP/THEMES then click save this only works on version 3.70 or higher
to get version 3.70 use Network Update