On a whim, I tried updating Airwave to 8.0.2 this afternoon and it downloaded. Its not released yet on the support site, but I have read in the past that sometimes they release, without posting.
Anyways. Airwave 8.0.2 did not solve the problem. I still get the same error.
Also, I went back through all the recent release notes for Airwave and Instant and I found no mention of unsupported firmware versions. I suggest that needs to be added to notes so that this type of thing can be avoided in the future. Needs to be in the Instant and Airwave notes.