PSP:Applying ROM Patches

Playing patched ROMs requires your PSP to have custom firmware installed.

Items needed

 * Game in .iso format (Creating Game Backups).
 * Patch file (xdelta format).
 * Patching software.
 * Archive extraction software of your choice.
 * PSP with custom firmware installed (Custom Firmware Installation).

Procedure

 * 1) Download and extract your game patch file (if necessary). The file should be in xdelta format.
 * 2) Download and extract xdelta UI to somewhere you can easily access and launch xdelta UI.
 * 3) Navigate to the "Apply Patch" tab. It will be at the top of the window.
 * 4) Next to the Patch section, click Open. This will open an explorer window. Navigate to your xdelta patch’s location, select it, then click open.
 * 5) Next to the Source File section, click Open. This will open an explorer window. Navigate to your game .iso file's location, select it, then click open.
 * 6) Next to the Output File section, click "…". This will open an explorer window. Navigate to the folder that you wish to save your patched game to.
 * 7) * Under the "File name" section, enter your desired output file name, along with .iso.
 * 8) * Leave "Save as type" blank and click Save.
 * 9) Click the patch button within the Xdelta UI window. It may take a few minutes for the patch to apply, but should display a "File patched successfully" message.