How to Your Custom Firmware MOD Your PSP

Step 10 UMDS, .ISO's, .CSO's, and .DAX and EBOOTS

This step explains the difference between UMD image formats, and PSP executables. First of all PSP software is either downloaded from PSNetwork or On a UMD format disc.

UMDs are simply mini DVDs in a plastic case, they can store 1.6GB of data and are non-rewriteable. So they can be ripped in .ISO format. But there is more than Just .isos there is also .csos and .dax and .jso
The difference is:

.ISO - The largest size, with the fastest loading speed, With almost NEVER any problems in the game.
.CSO - A Mid size with slightly slower loading speed (its unnoticeable) I have experienced one issue with a grand theft auto game.
.DAX - The smallest size, It is still supported but rather obsolette
.JSO - Once again a small size, but format has is no longer supported.

.CSO is the standered.

To play .isos

You can download games for free at pspisoz.com or pspiso.com however you are only downloading games that you own and have the UMD disc for. right ?

I AM NOT RESPONSIBLE FOR WHAT YOU DO WHEN IT COMES TO DOWNLOADING GAMES WHICH YOU DO NOT OWN OR SELL AND KEEP THE ISO.