I’ve had two updates to the 8.4” UConnect and never lost the backup lines. Also never have any problems with iPhone 11 connected via cable. I don’t bother with Bluetooth because the audio compression algorithm is lossy. Much better sound quality when connected via wire.Mine has always had backup camera guidelines since day one. I've had some updates and nothing ever seems to change on mine. Now that I've said that I'll lose my backup lines lol.