To "uninstall" previous LTspice:
- Delete the /Applications/LTspice.app folder
- Delete the ~/Library/Application Support/LTspice folder
- Delete any LTspice directories in ~/Documents
- Restart for good measure
To install the latest version of LTspice:
- Download latest LTspice from https://www.analog.com/ltspice
- Install LTspice by double-clicking download file and dragging the application into the applications folder
