I downloaded NBA 07 for my 3.40oe-a psp. When I finish downloading the game i went to the folder and i got like around 30 files. Most where in iso format. I extracted one of them and i got this huge file of 1.44 gb. I put the extracted folder and umd file in the iso folder. But when i went to my psp it said corrupted file. I tried other downloads all gave me the same 30 files. And all of them were the same when i extracted the file and came out to be 1.44 gb. Why isnt it working?