Thanks for the info so far.

(13/10/2010 06:26 PM)Kratosjohn Wrote:  like I think what would really be useful is a application like RCOedit was, it was very neat, organized and was easy to use program for newcomers.

For basic stuff like editing images, rcomage shouldn't be "hard" to use - just dump the file (synonymous to opening) and you can freely edit the images / replace them if you wish, and then just compile it (synonymous to saving).
I guess it's not as intuitive though.

(13/10/2010 06:43 PM)ProperBritish Wrote:  http://uk.playstation.com/ps3/support/sy...r-3-50%29/

see if you can work on a firmware file

Firmware files are most likely encrypted, so rather useless to try to pry open without access to a hardware decoder, unfortunately.