If you have a backup of a PS2 game you can try to copy it to your USB/internal HDD in your games folder and try to mount it.
Well... even if it doesn't work at the moment, may be in the future with some proper updates to the payload or using dev_flash off a usb stick may get out favorite PS2 games to run... May be the XMB xml file needs some tweeks... there was a tool for this in the 'news' thread.
Tried here too, with the same results... Using a teensy with PL3 using Syscall 35 on a 60Go Ps3 Fat. Ps2 games won't appear in the XMB while in Jailbreak mode.
Using the Filemanager I can browse the Ps2 disc in /App_home but I can't copy anything from it. Returns a "failed Async read" or something like it.
Oh yes, I forgot to tell about the App_home part. hehe
Just saying that I also have this, hmm. Nothing new to report though.
First post updated with links to 01.08.05... You can update from within the manager, too. The update includes support for DVD-Video and PS2 game folder detection/mounting.