Features:
Infinite health and armor
Edit wanted level
Edit time
Edit weather + Snow
Spawn anything
Display coordinates and speed
v0.2:
Teleport
Step through walls
Power jump
v0.3:
Activate spawn cheats with one button
Screenshot
Edit car colors
Never fall off your motorcycle
v0.4:
Firmware 2.6 support
Your car is indestructible, always steaming, smoking, or on fire
No reload
v0.5:
Video recorder
Change CPU speed to 333MHz (fw 2.0-2.5 only)
Battery percent, voltage and temp (fw 2.0-2.5 only)
Heavy motorcycle
Turn while power jumping
v0.5a:
Frames per second meter added to coordinates display
v0.5b:
Added "Really High" to teleport list for Dodo gliding
v0.5c:
Completely stops the game during screen capture so action shots won't be blurry
New savefile for UK version
v0.5d:
Confirmation dialog before unloading
v0.5e:
Gives the screen more time to repaint before screenshot
Dodo glider more stable
v0.6:
Flyable Dodo with thrust
Video recorder is a little faster
For all firmware versions:
US/Canada version 0.6 http://www.maxbot.com/gta/CheatDevice06US.zip
UK/EU version 0.6 http://www.maxbot.com/gta/CheatDevice06UK.zip
Unzip the archive to your memory card so the files go in PSP/SAVEDATA/ULUS10041S0 if you're installing the US version, PSP/SAVEDATA/ULES00151S0 for the UK version. This replaces the first save on the card.
To start CheatDevice, simply load it like a saved game. You can then load another save if you want and CheatDevice stays in memory.
Disclaimer: THIS CAN CRASH YOUR GAME. USE AT YOUR OWN RISK. Some of the spawn choices like the RC toys and boats will crash the game. Don't save your game after using this.