Things You'll Need
Instructions
Choose the images you wish you use in your custom theme. Select an image to act as the background as well as images to represent the following: Network, Game, Video, Music, Photo and Settings.
Select additional images if you wish to customize the sub folders of your PSP cross media bar. As of 2009, the PSP features 31 possible icons in the sub folders.
Create a folder on your desktop and label it ̶0;PSP Custom Theme.̶1; Add all of your images into this folder.
Open a picture editing program on your computer such as Paint or PhotoShop.
Load the picture you wish to use as the wallpaper for your custom theme into the editing program. Edit this photo so that it measures 480 by 272 pixels. Save this file to your new folder as a 24-bit bitmap image. Overwrite the existing wallpaper image in the folder.
Open the image you wish to use as your Network icon. Alter the size so it measure 64 by 48 pixels. Save the image into your folder as a 256-color PNG file.
Change the size and format of each of your six header images. Overwrite their existing files in your folder.
Open one of your sub folder images and save it as two separate files. One should measure 48 by 48 pixels and one should measure 64 by 64 pixels. Each should be saved as a 256-color PNG file.
Launch the Custom Theme Converter tool from your desktop. On the first screen name your custom theme.
Click on the ̶0;Wallpaper̶1; tab. Click on the folder icon and select the wallpaper image from your custom theme folder.
Select the ̶0;Category Icons̶1; tab and select the item you wish to change. Click the ̶0;Edit̶1; button to open the file upload menu. Select the file that matches the item you wish to replace. Return to the ̶0;Category Icons̶1; tab and move on to the next item. Repeat until your images have all been uploaded.
Click on the ̶0;First Level Icons̶1; tab and elect each item you wish to replace with your custom images. Choose ̶0;Edit̶1; to upload your photo. Your first photo is the Icon Body (the image that measures 48 by 48 pixels.) The second image you upload is the Icon Focus (which is the 64 by 64 image.) Repeat for each icon.
Choose ̶0;File̶1; from the top menu and select ̶0;Save̶1; to save your completed theme to your desktop.