Im hoping I don't get flamed for this but im completely new to PSP technology, I am using filmware 2.60 at present. I downloaded a game a week ago which is a CSO file and I would love to play this on PSP, having looked through all the threads on here already and guides on the main site im a bit confused. Will I have to upgrade this version to 3.02 OE-C and if so how do I get the filmware upgrade onto my PSP via the internet, im not even sure where to obtain this upgrade should I need it. Everytime I go to the filmware on my PSP it states no update is needed. Iv plugged my PSP into the computer but cannot locate a folder named ISO as previously discussed on other threads so basically I created one but couldn't locate it on my PSP to play the CSO file which I placed inside a folder named ISO. If I do need to create a folder where do I put it? Once I open my PSP via USB I have a folder called PSP, OMGAUDIO, MISC, DCIM, seeming how this file is a CSO would I need to create the folder under CSO rather than ISO? Iv been trying to find a straight forward solution all week, anyone would think this is rocket science. Any help or guides which from websites would be great. Thank you.