Well, I found the "Playonline" disc which comes with FFXI, with cobra it boots, gets the "Install to HDD" menu, and does in fact create a "PS2" folder in XMB, which contains "Final Fantasy XI" icon, and it is bootable! Sadly, clicking on it does nothing but lock up the machine, because a) it's not a BC PS3 (although Cobra does go into PS2 mode, LED turns blue) and b) The actual FFXI game is not installed yet, which C) is impossible to do without a Playonline account
I'd sign up for one, but D) the Playonline GUI (which does work when you put the Playonline disc/iso in after the initial partition creation) is all garbled and in Japanese
The FFXI disc boots fine (a bit of garbled video, but everything works) but when you click on Install, it simply tells you that you must install the game using the Playonline GUI
I've never missed my CECHA01 as much as right now.
: the SFO is a 2G type
 Is it even possible to install PSL1GHT in windows? Using cygwin, I get the "../scripts/004-gcc-4.6.1-PPU-stage2.sh: Failed." error, and tried deleting the config.cache file as suggested elsewhere, but keep getting the error. Very frustrating, as it happens like 20 minutes into the install.
[edit2] Okay, I got a whole development suite set up in ubuntu. I'm between a rock and a hard place now, because I have to use a cobra setup on a non-BC ps3, and that may be wrecking things, or it may be an error on my part, or it may be that modifying .elf files changes something in the internal hash of them which must be addressed in ways I don't know. Suffice it to say, I successfully unselfed, modified title id, and re-selfed with all original attributes all the ps2emu files, and they don't work. Black screen and hard lockup. This might be cobra, or it might be something else. I have a few more things to try, but this idea might be dead in the water for now