undertaxxx and GhOsT have created a cool little mod that allows you to change the PSP’s battery level indicator. To install, just backup your original “system_plugin_fg.rco” then flash your new one to vsh/resource. Before flashing your new rco, make sure you rename it to “system_plugin_fg.rco”.
Download from QJ.net or QJ Forums

Trying to play games off your memory stick but you don’t have enough space? Do you want to play your ISOs without having to copy over the file each time you switch games? Now you can because TheBuzzer’s USB mod has been unofficially updated, by PSPSwampy, to work with the newest custom firmwares. This plugin […]

dark420bishop has updated his Submenu Icon Injector to v3.0. This program allows you to change more than just your main XMB icons, but many of your sub-menu icons, too. This new update even allows you to change the “Corrupted Data” icon! Unfortunately, this does not work for 3.1x firmwares.
Changes:

Added icons for all Settings menus, loading […]

Now we can change more than just the main XMB icons! dark420bishop has released v2.0 of his application called Submenu Icon Injector. This program allows you to change some of the sub-menu icons such as the camera, rss feed, and remote play icons. Another great part about this app is that you don’t have to […]

Translated by caliFrag, Aythamie has released an updated version of kgsws’s xmbPackager, an app that allows you to change your PSP’s XMB icons. This new release fixes the 3.03 icons as well as all the languages. Full changelog below.
v0.3.1

Fixed German names for new icons.
Fixed Spanish names for new icons.
Fixed French names for new icons.
Fixed Italian […]