why does my psp say corrupted data on game?

well every time i copy a game onto my psp it says corrupted data 

 well it depends are these games ISO"s or games you buy online

frollard7 years ago
The data is in the wrong folder, named incorrectly, or is not supported by your firmware version...

unless you are referring to a legit purchased game from the ps store - then they should copy properly so long as all the account information is correct.