i'm wodnering how to play cso games on the 3.03 firmware

CSO just mean compressed ISO. You treat it exactly the same way as .iso files. Which means put it in the ISO directory. XD

thx, but i don't know how to put the games in the psp
i just upgraded to 3.03 oe-a
all i have is a *.cso file

You need to create an ISO folder on the root of your psp. Then put your iso/cso file there. After that itll show up in your memory stick just like any other homebrew. Just click and play. Thats for psp isos anyway. PSX isos are different.

i put my psp isos in psp/ISO but when i run the game i get "game could not be started"
i've tried three different games
is there something i must have

if m not mistaken u put in in x:\psp\iso ? i think u shud put it in x:\iso folder

x: <-- being ur psp drive letter on ur desktop maybe f: g: h: depends

for all you wondering the iso/cso file goes in ms0:/iso folder and you need a umd in the drive for thge game to work....or you can boot your psp into recovery menu go to configuration and enable no-umd setting

The iso folder is in the root, not in the psp folder. So x:/iso

ms0: = x: = root of your psp

Pretty darn sure this is another one of those, he didn't have a UMD in his PSP thread. Put a UMD in your PSP then try.

thx put in right folder
it works