optimize is only for stock SE 2.1 roms... and u are right it just enables/installs JIT... DO NOT USE it on roms other than stock SE 2.1 roms... all 2.2/2.3 roms already have JIT enabled...A quick question about new flash tool. I already had root, xrecovery, JIT, and removed SE apps before the flash tool could do these things. Is the optimize button just JIT, or is that something different?