My dad has a late-model Ford Fusion. We've had chronic problems with updates not installing. In fact, he got so fed up with the update starting but not completing, he took it to the dealership to have them do it. They couldn't get it to work, either. No joke, we had to just keep trying again and again until it worked, which took a few weeks.
Each update attempt takes about an hour, and the engine must be running the whole time to keep the battery from going flat, so you can only effectively install the update on a long drive. The best part is that when the update "finishes" the system instantly restarts and then tries to do the installation again, and you have to wait for it to fail since the update is already installed. The Fusion is a nice car, but this software is total garbage. Seriously, I cannot believe how terrible the maintenance procedures are. It's like, there's no interaction, progress bars, or sanity checks built into this software.
It reminds me that I should never sell my old Subaru that predates all this forced telemetry and touchscreen nonsense.