CWCheat v0.2.3 for 6.20TN is released. CWCheat is the FIRST ever cheat device available on PSP. With cwcheat you can apply raw-relative cheat codes either in PSP and POPS game mode (due to two different version of this application: cwcheat and cwcheatpops) just like the
famous commercial products "Action Replay", "CodeBreaker", "GameShark", "Xploder", etc. available on other platforms. cwcheat also features cheat searching and editing through a nice and easy-to-use in-game menu.

Download: CWCheat v0.2.3 for 6.20TN
Source: Here