This program lets you choose and flash gameboots to your flash0 while going through safety checks and flashing it the safest possible way so you lower your chance of a brick by doing it manually.

Quote:

This release comes bundled with 50 gameboots, 71 background waves, 22 bootlogos (opening_plugin.rco), and 6 bootsounds.

http://forums.qj.net/psp-development-forum/151434-release-gameboot-editor-v-3-a.html