I tried to put cheats on UO GPSP and they won't show up.
I tried it on GPSP 0.9 and they work fine but GPSP 0.9's screen isn't full and I prefer UO GPSP.

Here is how I put the code.

gameshark_v3 (game name)
(code)

and they work on GPSP 0.9 but not UO GPSP.