Hi, first of all i would like to say thank you to all the programmers and developers that made homebrew possible, without them, the psp wouldn't of gotten to be where it is.
Now to the theory, since if u use devhook to emulate firmwares, u have the dumps on ur mem stick. This means that u should be able to just replace the top_menu.rco or whatever it is with the modded one. Devhook would just mount the dump like it would a normal dump, and u should have custom psp icons. I'm going to try this out soon, and post my results. (By the way, i have a HEN-D ta-079 2.71 psp)
VISTA THEME HERE I COME