I wonder if there will be one where backups can be played from a disc so it does not matter what firmware you are on since then you would not need to put it into that mode to play the backups and then you can format the homebrew applications like a disc to give access to things being installed into the ps3?
Just an update, per xorloser's Twitter: http://twitter.com/xorloser/status/18470986890346496#
Last chance to sell any Sony stock you may have
While this is just speculation, perhaps he caught wind of what marcan, bushing, and sven will be unveiling (something not easily patchable, such as a PS3 jtag or bootchain exploit?) on the 28th at the 27C3 Hacker Conference 2010.
I hope that there is something which isn't patchable by software at all, similar to the iPhones Bootrom exploit, or the boot2 hack on the Wii which allowed BootMii to be installed.