After spending 7 hours on the road, I came back with the same problem.
The dealer (Westbroad Audi in Richmond VA) tried to program my used
cluster and they ran into problems.
I had a lengthy talk with the technician , he said the he started the
adaptations, but then half way through it stopped, he hit continue and
a message popped up. Cluster exceeded the 100 KM 62,000 miles and
adaptions could not be carried out. He said he tried manually entering
the numbers, still didn't work.

I got a print out as well that shows two possible causes, the one
mentioned above and that the cluster had already once been
reprogrammed at 60K miles. I'm pretty upset as I spent $113.00 on the
used cluster, $ 205.88 with Audi and who knows how much gas driving up
there and back.

In all fairness I have to say this though. The customer service at
Westbroad Audi in my opinion is outstanding. They asked if I mind that
they check the entire car over. They found a lose strut tower and
fixed it at no extra charge. Then the tech came back and asked if I
liked the car washed. "How much?" I asked. Nothing I was told. Instead
of giving me a laundry list the tech came back and explained with a
service manager that I had a few minor issues but that car was in
overall great condition.
Upon request the tech gave me a channel number that allows you to
unlock the new cluster.
When I got home I carefully took the new cluster apart to expose the
circuit board. Appears to me that the center display could be removed
from the cluster and replaced separately if you're handy. I will
attempt this surgery in the next two days.

--Martin
www.MartinBartloff.com