Someone know ho to switch audio banks in command 8 and media composer?

it still work in last media composer perfectly but I can control only 1-8 tracks .

any suggestion?

Isn't there a physical button on the command 8 which will allow you to swap banks?

I have the artist mix and it works that way... wondering if it's the same for the older command?

Yes, it have a bank button (turning led on also) but if I push the button (left or right) nothing happens.

command 8 it's not Eucon like mix. Maybe it's some setting to switch on

Nah, infortunately does not work like that, you are stuck with just the first eight tracks.

Back in the distant past (MC 7) you were able to switch banks of eight in MC which allowed you to get at the others...

I really like command 8 because with the programmable buttons (adding a small jog/shuttle) you can work very faster. 
when I work as assistant editor 8 tracks are enough for my needs, but it's a very pity MC don't allow to switch banks.