To upgrade Exodus follow these three steps. Installing a new version over an old version is safe. Exodus keeps your blockchain assets in a separate location.
1) Quit Exodus if it is running.
2) Download the latest Exodus release available at: www.exodus.io/releases/
3) Windows users double click to run the installer.
Mac users double click the disk image then drag Exodus onto the applications folder.
Mac Help Movie Installing Exodus
Windows Help Movie Installing Exodus