First of all, thank you for your interest.
I repeatedly walked away from the car and came back in to start it, but the UI did not appear properly.
I don't think this would have happened if I had purchased the product and used OTA right away... Before I understood how to use OTA.
There is a history of performing UI Update using the UI 01, 02, and 03.zip files at the URL below.
I think the cause may be updating file number 01.
Reference link:
drive.google.com
After learning how to proceed with OTA, I proceeded with OTA with the latest version, and basic UI such as vehicles did not appear. For your reference, Android Auto connection and operation work well.