I don't think that was always clear to everyone - I wasn't riding this into the ground for my benefit alone (that would've been a HUGE waste of time) but for everyone out there who's still using (and loving) these devices. I'm honestly not sure I'm going to keep my Oasis now - I just love my old v2 that much.
Final update from Amazon (via me): they did push a fix out this AM. It's not the OS (we're still running 2.5.8), it's not the services patch, or anything else. They couldn't tell me exactly what it was (and I understand why) but when I pointed out that it seemed to be some sort of authorization certification the person I spoke with chuckled and said "something like that".
They were very clear about being thankful and appreciative that this matter was brought to their attention and I am passing along their thanks to those of you in the community that helped. I passed along everything I could that was data - and they said it was key in isolating and resolving the issue as quickly as it was (once they were aware of it). :)
So, kudos and good job to everyone who spoke up and provided meaningful input. There are a lot of people out there who now have this problem resolved, or, even better, will not experience the issue. :)
Yes, I dig into my Kindle DX. Amazon sent something to the device. It is encrypted. They are very careful to talk to you Birdie because what they send is a security certificate. Anyway, our oldie Kindle is now working again! Very happy!