Can't play backup with Jap PS2

The PS2 Utility Disk has a TOC (Table of Contents) that restricts the game coming in behind it (your backup) to I think it's 621 MB (the size of a game on a standard CD PS2 Game). This swap method won't allow DVD rips greater than the Utility Disk TOC size.

As for downloaded games, if the size is not the problem, you're in the hands of whoever made the dowmload.

I moved to the Origachip to get round this problem on my SCPH 15000 and I boot now with DVD Region x. Noe I don't have a ripped disk > 650MB with which to play!