This plugin allow to :
-Patch the Reboot of the PSP
-Patch the Shutdown of the PSP
-Hide UMD Update Icon
-Patch flash 0, 1, 2, 3 USB accèss
-Redirecting the file version.txt to ms0:/PSP/SYSTEM/version.txt
-Patch the blit TIFF image "blit corrupted data for file with extension .tiff"

-How to install it
For install it copy the folder seplugins in the root of your Memory Stick
and copy this line ms0:/seplugins/Sedna.prx 1 in the file X:sepluginsvsh.txt, X:sepluginsgame.txt

X = Letter of your PSP in Computer

-How to use it
Is it independent, you nothing to do has been have activated, it work in background.

-Known Bugs
Some Reboot/Shutdown is still executed despite the patches apply.