1. Custom Coldboot
2. Kiosk/Shop XMB restrictions have been removed so PlayStation Home/PlayStation Store work fine.
3. Modified to allow installation of retail signed packages
Notes: DO NOT install this unless you have an E3 flasher or Progskeet type device to downgrade your PS3 to 3.55. Unfortunately 3.55 signed PS3 homebrew does not install/run. Also be aware it doesn't load any PlayStation 3 game backups so you will need to have the game disc to play them.
To Unlock the XMB: Hold L1+R1+Select+Square simultaneously. When the security settings icon is selected. It will ask for you to input a code (four digit code). Enter 2464.
PS: PS3Hen if you would like to add XMB Manager that would be great
I have my own plans for the kiosk using VSH.self, which I may (depending on whether it works or not) reveal in my 4.10HFW. But I'll can patch your CFW with the XMBM+. Do you want it loaded from USB (which allows for updates), or loaded from the category_game.xml (updating requires re-installation of firmware)?
Okay, but please do keep in mind to go back to 3.55 firmware (if you were on it) you will need a hardware flasher like the the E3 flasher and this can't run multiMAN or anything else that lets you play game backups.