Open the patch folder (for 6.60 ME or 6.20 TN HEN) and overwrite the cwcheat.prx with the original one you installed earlier in /seplugins/cwcheat/ on your Memory Stick (or internal storage for PSP Go).
This guide I'll show you how to put Cwcheat on a HACKED psp.
If you are unfamilliar with these terminology refer to the list below:
Cwcheat----A homebrew cheat device that allows players to cheat in-game with database
.prx----A plugin module for hacked psp that have diffrent functions
Recovery menu---- the menu that appears when holding R trigger when booting psp
CFW----Abbreviation for custom firmware
DISCLAIMER: I am not responsible for people that don't follow the instructions and mess up their psp, so only do it at your own risk!!!
one more thing : remember the DB? well if there are newer games that you want cheat on, the older DB that you are using may need to be updated. Simply enter USB mode, go into SEPLUGINS and find the cwcheat folder. Inside you will find other folders like mc, remaps and text. But we focus on the CHEAT.DB file, just replace the old CHEAT.DB with the new one we downloaded and hopefully there will be updated cheats for new games.