The PSP's flash contains numerous RCO files (localized resources)
in the flash0:/vsh/resource folder.  These files contain various
things such as icons, sounds, text and so on, which the PSP uses to
display the XMB interface.
RCO Editor is what its name implies.  Currently almost all of the
RCO can be edited in RCO Editor.  Some example uses:

• replace icons
  
• replace sounds - support for both stereo and mono sounds
  
• replace text (longer text is supported)
  
• modify some page and anim data

Random update on 18th October 2009
More bugs fixed - crash found thanks to byte.me, and some 4 bit conversion issues.  
You can get the updated EXE here - just replace the EXE in the package below with the one in the link in this sentence.

Random update on 11th June 2009
A number of bugs fixed in 1.15c.  I'm lazy so won't update the version number (actually, I'm getting close to finishing my rcomage program which will replace RCO Editor to some degree).  You can get the updated EXE here - just replace the EXE in the package below with the one in the link in this sentence.
This update just fixes a few issues with image handling (more specifically GIM«>BMP conversion).


Last updated, 28th Oct, 2007, version 1.15c
Changes in 1.15c

• Fixed another bug in GIM conversion routine

Changes in 1.15b

• Fixed a bug in the decompression and GIM conversion routine

Changes in 1.15:

• Rewrote GIM «> BMP conversion routine
  • Dimension restrictions removed, as well as the "visible dimension" nonsense (RCO Editor automatically fixes that)
    
  • osk_utility.rco icons no longer cause crashes
    
  • Support for creating 4 bit and 32 bit GIMs (previously, only 8 bit supported) - effectively removing the 256 colour restriction
    
  • You can now use ICO, PNG and GIF files as inputs, in addition to 4 bit BMPs
• Other minor changes and bug fixes
  
• Added option to disable compressing resources - this is for some 3.7x RCOs not working properly with compression enabled

So what sort of things can this program achieve?  Well, you can just take a look around the many themes which are now possible with this.  You can find a list of some themes here.

Okay, that out of the way:
Download (142KB)

Source code available here

(This post was last modified: 18/10/2009 04:59 AM by ZiNgA BuRgA.)