Help with Jellycar V1

[Pontymython]

Hi,
To start this off i need to say that i am completely new to this and dont understand a lot of this in the least. I have been trying to download Jellycar V1 to my psp which is running 5.0 m33-4. However after placing it in the PSP/Game folder it says corrupted data. This occurs even after I turn on the hide corrupt option. I have come to think that there is something fundamentally wrong with the memory stick or the way I am placing it. Any help would be greatly appreciated.

[whoppers]

Did u just update to 5.00 m33-4?

[WeThEgReEnPeOpLe]

try downloading the file again from a different site
try seeing if there is a new update of jelly car
try checking to see where your game kernel folder is set to
try....checking to see if you still have cfw XD

[Killer]

Make sure it's going in a folder of it's own in GAME. So GAME/Jellycar/EBOOT.PBP.

[Pontymython]

Thanks guys all of your suggestions were great but the real problem appearantly was that winrar has problems extracting directly to the psp/game folder. I fixed this by placing it on the computer first. Thanks for all of your help.