Even with version 18.45.01, users occasionally encounter problems.
For vehicles equipped with factory CarPlay/Android Auto, this version fixed random disconnects when using USB cables. It also improved the initial handshake speed, meaning your phone’s interface appears on the screen faster after plugging it in. Uconnect Software Version 18.45.01
Uconnect Software Version 18.45.01 is a firmware release primarily designed for with 8.4-inch displays. Released in the late 2018 to early 2019 timeframe, this update falls into the category of a "major revision" rather than a minor hotfix. It was distributed by Fiat Chrysler Automobiles (FCA, now Stellantis) to address several systemic issues present in earlier 18.x versions, such as 18.14.xx and 18.34.xx. Even with version 18
Do not turn off the ignition or remove the USB during the installation (approx. 15 minutes). Uconnect Software Version 18