79 Unlock before ixtreme 1.51?

[Demonicflair]

Ok, so I am extremely confused as to whether I can use ixtreme 1.51 (On my hitachi drive, so it is the highest possible firmware update so far) after I've already used 79 unlock. I dont want my drive to be bricked so I'd like a few pointers & if possible some professional help.

[cgscott]

Yes ixtreme 1.51 is the latest for the hitachi.

The 79 needs an audio cd to unlock. Then flash the same as any other hitachi.