I was able to find the latest firmware for my 3576 (aka TS3310) at Fix
Central. However, I cannot find the latest firmware for the fiber channel
LTO4 drives in it.
The library firmware is at 660G.GS007 and I may upgrade it to 670G.GS003.
The drives themselves are all at C7QH and according to the
Qualified_Drive_Code_Information.txt that came down with 670G.GS003 that
is current for those drives.
My concern is that am waiting for IBM to come deliver a replacement drive
and if it's been sitting on a shelf too long it may be outdated with
firmware and I like to have a copy to upgrade it to. Ain't my first
rodeo. Although, to IBM's credit, often it's been the other way. Their
drive is newer and I have to upgrade all the others. The library can get
a bit snooty if the drives aren't all the same firmware level.