I've unbricked my MKV about 3 times today and tried to upgrade to the latest version from the original 1.02. Every time I unbrick it, the device is running fine. During the upgrade, I get the "MD5 Matches. Performing upgrade." screen. It hangs there for at least 30 minutes and seems to have the spinning pineapple going forever. The first two times, I shut it down and tried to load it again. I was able to get to a black screen with only three clickable options, one said "Infusions", the second one I'm not sure and finally the logout option. The only one that actually worked was the logout option. I don't think I'm doing anything wrong with the update, it just seems to not be working. I'll give it more time on this third try and see what happens.
The green light is illuminated along with a flashing red-blue-amber sequence and I can see the Pineapple AP.