Hello guys!
Thank you for all infromation in this topic of forum. I'm impressed of all you.
I read all 20 pages and downloaded the 800 fw for Hitachi 7k3000 2TB and went home to upgrade my HDD's from 580 and 5C0 to 800.
But, with ur help, while I read all info here, I wrote many letters to Hitachi Support, again and again, on my request.
And, with blessing of God, I have got from them the A10 fw.
Grats to us!
And there is link to A10 fw for 2TB Hitachi 7k3000:
https://apps.tourocloudbackup.com/d/index.php?226FK89J
Good luck and ask, if what! =)))