Things You'll Need
Instructions
Connect your PSP to a Windows or Mac computer with a USB Mini-B connector. Switch on your PSP and scroll all the way to the left to the "Settings" menu, then select "USB Connection." A window will pop-up, allowing you access to the folders on your PSP Memory Stick.
Double-click on the "PSP" folder in the PSP Memory Stick. Then double-click on the folder called "PHOTO."
Make a new folder on your computer's desktop. Select all the photos in the "PHOTO" folder in the PSP and drag them to the folder on your computer's desktop. Delete all the images in "PHOTO" folder after you are done copying them.
Select all the pictures in the folder on your desktop and copy them back into the "PHOTO" folder one-by-one in the order that you want them to appear in the slideshow.
Press the "X" button on the PSP to close the USB connection and remove the USB from the PSP.
Scroll to the "Photo" menu on the PSP and press "X." Press the "Triangle" button then press "Start" to view your images as a slideshow.