ESI 4000 software information please!

Hi guys, ive gor an emu esi 4000 turbo.
Having fun with it!
My Os is 3.02, is this the max system upgrade that this sampler can have or i can go for version 4.0 aswell??
THX!
Having fun with it!
My Os is 3.02, is this the max system upgrade that this sampler can have or i can go for version 4.0 aswell??
THX!