Brewology

now what do i do with all the aplications from upgrading and downgrading that are on my mem stick? there is somethings that say corrupted dats, some other things i dont even know what they are lol

The first thing you wanna do is reboot your psp into recovery mode by restarting it and before it boots up hold the R button
and it will take you there.

Go into Configuration>>Game folder homebrew>>and make sure the kernel is set to 1.5, if not, change it.

Now you can run late homebrew, psp games, isos, customize your psp, xmb, backgrounds, themes in a
real easily fashion way and without having to upgrade.

eh slick... i think you misunderstood him. He's talking about the stuff he used to upgrade and downgrade.

Anyways just reformat your memory stick and it will clear all that stuff off for you.

In the future you should post your help related topics in the help section. Thanks.
~moved to help~