PSP CheatUp is an application designed to simplify the task of updating the cheat codes through the use of the PSP’s Wifi and a wireless internet connection.

Changes:

Added: Support for DarkCheat, DayPR, FreeCheat and IcyPR (note most/all other nitePR clones including MKULTRA should use the nitePR option).
Fixed: The CWCheat POPs database is no longer erased as there is currently no POPs database included in the download.
Fixed: Improved the error handling of the Wifi download code.
Other: Removed random background colours so the lateral menu colour matches the background colour.

http://forums.qj.net/psp-development-forum/158647-release-psp-cheatup-0-25-a.html