My OTA update was seriously botched. I just got alerted to an update today (2017 hybrid) -- I wasn't aware it did OTA updates.
The screen required me to enter a date/time for the update. It gave the warning about how to be in park, certain features disabled, etc. I chose in the middle of the night tonight (~1:00AM). As I was driving it wouldn't let me listen to the radio (a minor nuisance, I can put up with that <G>). The screen asking for a date/time came up again, and wouldn't go away.
As I was driving, all of a sudden the screen showed a timer, and said "Wait 5-10 minutes..." in 3 languages. It then started the update, as I was driving. Fortunately, I was almost at my destination, and I stopped. Backing up into the parking spot, the camera (A SAFETY FEATURE) was disabled. I left the car with it 49% of the way through the update.
I came back about 20 minutes later, and the "Software Update" screen was back, asking me to schedule a time for the update -- even though it presumably had just updated. I tried choosing the default time (now), but it didn't update. Yikes.
So the car automatically did something it had just recommended against (installing while driving), disabled a safety feature without permission (it states that it will disable the camera during installation, but I did NOT choose to install at that time), and is asking me to update (again?) without actually doing it.
Not a great first impression with the update (I bought the car used 7 months ago). I love the car, but this was concerning.