Our car was put on a "do not update" list last fall, without any notification by Tesla.
During Hurricane Harvey, we parked our S 100D in a multi-story parking garage (no charger, no WiFi) and put the car in "deep sleep mode" (always connected turned OFF) to conserve power while the car was parked for almost a week.
A few weeks later, when we didn't get a software update other 100Ds were receiving, I called Tesla's phone support team, and they found our car had failed several times to install an update (while it was parked away from home), and that the car had been placed on a "do not update" list. We would have to bring our car in for service to get the next update installed.
While it's possible the onboard display had displayed a warning on the console when the updates failed, when we returned to the car, there were no warning messages on the display - and Tesla had made no attempt to notify us of the problem. If we hadn't called them, we wouldn't have known about this situation - and wouldn't have received any updates until our next scheduled service visit.
Once Tesla manually installed the update at the service center, our car was moved off the "do not update" list, and we've since received multiple updates.
So, at least in our case, we were temporarily "blacklisted", due to multiple failed attempts to install an update.