What this means for "normal users" is that once this exploit is fine tuned, homebrew applications will be able to reside safely on 2.5 and 2.6 versions of the PSP. Its said that you will still need a copy of Grand Theft Auto: Liberty City Stories to access the exploit, however it is progress.
The developer that found the exploit urges against anyone but the highly experienced PSP modders look into this exploit until a more stable means of implimentation can be developed.
Source:
PSP Updates
Written by: Dave Horvath @ 28 Jun 2006 8:50