.:First, you will need UMDGen. Here are all the UMDGen's that have been released so far...
.:http://umdgen.ps3news.com/UMDGen_v4.00.rar:.
.:http://umdgen.ps3news.com/UMDGen_v3.50.zip:.
.:http://umdgen.ps3news.com/UMDGen_v3.02.zip:.
.:http://umdgen.ps3news.com/UMDGen_v3.01.zip:.
.:http://umdgen.ps3news.com/UMDGen_v3.00.zip:.
.:http://umdgen.ps3news.com/UMDGen_v2.01.zip:.
.:http://umdgen.ps3news.com/UMDGen_v2.00.zip:.
.:http://umdgen.ps3news.com/UMDGen_v1.02.zip:.
.:http://umdgen.ps3news.com/UMDGen_v1.01.zip:.
.:http://umdgen.ps3news.com/UMDGen_v1.00.zip:.
Tutorial
*Note:You will need a PSP with cfw (Custom Firmware)
1. Turn on your PSP and hit 'Select' in your XMB menu
2. Go down to where it says USB DEVICE. Change it form 'Memory Stick' to 'UMD Disc'
3. Now pick a game that you have that you would like to turn into a .cso file or a .iso file and put it in your PSP
4. Plug in your PSP and go into USB Mode
5. On your computer a file should pop up that says 'UMD9660'. Open that up and there should be a folder called 'PSP_GAME'
6. Now open up UMDGen drag and drop the folder 'PSP_GAME' to where it says 'no items to show'
7. Go up to where it says 'Save' and click either 'Uncompressed (*.iso)' or 'Compressed (*.cso)
8. It might take a while depending on what you saved it as (.cso files take longer because it is compressing it) and how big the game file is.
9. Exit out of USB Mode, hit 'Selsect' again, and change 'USB DEVICE-UMD Disc' to 'USB DEVICE-Memory Stick'
10. Once UMDGen is done go back into USB Mode and drag and drop the new .cso or .iso file into your ISO folder. (If you don't have and ISO folder, make one on the root of your memory stick)
11. Exit out of USB Mode, hit 'Select', and change UMD ISO MODE to 'M33 driver'
12. Go over to GAME in your XMB menu, click on the game you just saved in there and enjoy!
If you have any Questions or Problems please let me know.