Listen, Google knows that they bricked all of these devices. It's not clear if they did it intentionally or not. They may have been clearing way for the new Nest branded devices, but they definitely have acknowledged to me that they knew they were bricked after an update.
At one point not long ago, they would process your replacement order. However, it is unclear if that was just a delay tactic or "customer service theater" because they have you do some outrageous things before they will return it. Then, when you think you are all done, there will be something holding it up and they will cancel the replacement and not tell you. You'll wait for several weeks and then go to check on your replacement order to find that there was no order placed.
It's really rude.
