My wife drives a 2017 Citadel V8. On the same day I received an FCA email asking me to go online and download the latest Uconnect update, my wife showed me a message on the Uconnect screen prompting her to accept an update. I thought the car had downloaded the required update OTA on its own, so I clicked accept and let it sit for an hour with the ignition off. Then I followed the link in the email and downloaded the 18.45.01 zip file. When I turned on the car to check the system version, I noticed it had only updated itself to 18.43, which is not even among the older versions addressed in the 18.45 install instructions. I went ahead and updated the car to 18.45.01 anyway, through the USB port. I had to keep the car running for about 25 minutes for the install to finish. With 18.45.01, I haven't noticed any difference in the Uconnect interface or functionality. However, my wife complained about hearing thumping noises from the left front speaker even when the radio is muted. I will have to drive it myself to verify her claim.