I have a Denon 5800 and Onkyo 990, both home theater receivers. I was
transferred to Europe just after buying them, but I'm back in the US now.
Both have had free "firmware upgrades" to fix bugs and other issues, but
neither seems to be available anymore.

I'm sure it's just a software upload to the units. Can anyone steer me to
the right place? A dealer perhaps has the disk available - clearly there are
no "rights" issues. . .

Thx in advance.

Jim