Custom themes are saved to flash1:/vsh/theme/custom_theme.dat . The 3.71 fw comes with the 'cookies' theme preinstalled, saved as flash0:/vsh/resource/custom_theme.dat .
The web browser reports the PSP's version as 3.70.
Registering your PSP with a LocationFree base station makes a file called ms0:/MSSONY/LF/REGISTER/REGISTME.ERD (??? not confirmed, just a guess).
The HTTP user agent for the LocationFree connection is "LFX HTTP Tunnel Client 1; model=LF-PSP, modeltype=6, generation=3, support=1/2/3, codec=0/2".
The exact Flash version is "Shockwave Flash 6.0 r72".
Licenses for DRM-enabled video will be stored as "/PSP/LICENSE/*.PNL", and the video *might* be stored as "ms0:/MPE_ROOT/100AEV01/*.MLV".
There's a reference to "ms0:/MP_ROOT/105ANV01/MAQ00991.MP4' for ... some ... reason.
Please visit here for my OWN upload, you have to put eboot in a UPDATE folder then in game!
UPDATED SOON