Copy a UMD to your computer using a USB Cable. If you have 'Custom Firmware 3.52 M33-4 or higher' there is a UMD Copier feature built into the custom firmware. The dumping process should be similar on Macintosh and Linux computers as well as its just a basic 'file copy' Its probably best to plug in your AC Adaptor because copying a UMD Disc will use a bit of battery power. Copying a 1.42gb UMD Disc with the AC Adaptor plugged in took me about 20 minutes. The transfer rate started at ~1.3 Megabytes per second at the start and increased to ~1.7 mbytes per second towards the end. (The PSP UMD drive is 'CLV' drive', this means its slower to read data at the start of the UMD disc and it gets faster near end of the UMD disc) To copy a UMD using Custom Firmware '3.52 M33-4' and higher: (This copying method will work on both the PSP Slim and PSP FAT as long as you have 3.52 M33-4 or higher custom firmware) Setup - Using VSHMenu: 1. Turn on your PSP and go to the VSH Menu (the main menu) 2. Insert the UMD Disc you want to copy. 3. Press Select and on the VSHMenu change "USB Device" to "UMD Disc" 4. Go to "Copying the UMD section" below. Setup - Using Recovery mode: (if you have the VSHMenu disabled.) 1. Turn off your PSP by holding the power button for 4 seconds. 2. Turn on the PSP while holding the 'R' button to access recovery mode. 3. Select 'Configuration' and press 'X' 4. Scroll down to 'XMB USB Device' and press 'X' until you see "UMD Disc" (It scrolls through 'Memory stick -> Flash 0 -> Flash 1 -> Flash 2 -> Flash 3 -> UMD Disc) 5. Scroll up to the 'back' option and press 'X' 6. scroll to the 'Exit' option and press 'X', the PSP will load the XMB menu. 7. Insert the UMD Disc you want to copy. 8. Go to "Copying the UMD" section below. Copying the UMD: 1. Connect your PSP to your computer using a USB cable and activate a USB connection. 2. You should see a new 'Removable Drive' appear in 'My Computer', inside that new drive is a file called 'UMD9660.ISO' 3. Copy this file and paste it to a folder on your computer and the UMD Disc will start copying to your computer. The copying process may take up to 15 minutes, It depends on the size of the game... 4. Once the UMD has finished copying to your computer, you can close the USB connection. 5. Rename the file you copied to your computer from 'UMD9660.ISO' to the name of the game you just copied. (you might need to go to the properties of the ISO file and remove the 'read only' attribute so you can rename the file) 6. To copy another UMD, insert the new UMD Disc and repeat steps 1 -> 5 If you have finished, change the USB Device back to "Memory Stick". (see the setup section above for instructions) You can now copy this ISO into the ISO folder on your memory stick or you can compress it to CSO using a program like UMDGEN.