Tools Required:
- Toast Titanium 5
- Macintosh PC

1. Open 'Toast Titanium 5' and it should look like this upon opening.



2. Click and hold the "other" tab and scroll down to ISO 9660 and release. It should end up looking like this.



3. go to the "select" button under where the files should be, than go to the "settings" tab and make sure it looks like mine.



4. I can't remember whether I dragged and dropped the file into the window or used the browse function, but either will probably work.

Please note:
Also, include like a 1 gig dummy file (I just used part of a movie file that was 1 gig). Now click the "Record" button at the bottom right and wait. Than pop it into xbox and follow your instructions per chip for actually installing it.