Alright, LeopardAssist III Release Candidate 2 is now available.

http://leopardassist.sourceforge.net (SourceForge, 3.1MB ZIP)

https://www.macupdate.com/app/mac/26562/leopardassist (MacUpdate mirror)

It has some extensive under-the-hood changes from v3.0-preview (RC1). So many that It could have been considered a version increment to 3.1. The changes include:

• Extensive rewrite of the UI code
  
• Extensive rewrite of the Backend (interfacing with OS/NVRAM) code
  
• Minor UI changes
  
• Limited customisation of startup options now available on G5 systems.
  
• Added option to boot from USB where supported.
  
• Reset Firmware Defaults now performs a complete Open Firmware reset on restart.

With a little luck, this will be the version that's released as the Final. It seems to work so smoothly on the machines I've been able to test it on.

Cheers,

~ Mic.