Open terminal and execute the following to set up a profile:
/Applications/Firefox.app/Contents/MacOS/firefox-bin --ProfileManager
- Open Automator
- Choose File -> New -> Application automator new app
- Choose Utilities group under Library
- Drag Run Shell Script to the workflow pane on the right
- Paste the following script
/Applications/Firefox.app/Contents/MacOS/firefox-bin -P MyProfile -no-remote >&/dev/null
- Choose "Save as" and save it where you want to keep it
- Right click on the saved file and choose Get Info ( or use Cmd + I ) to bring up the Info window. sure that it is not locked (bottom right corner) -
- Open Finder and go to /Applications/Firefox.app/Contents/Resource directory
- Open firefox.icns file in Preview (just double click it).
- Click on the image shown in the main Preview pane, copy it using Ctrl – C, click on the icon in the top of Info window and paste it using Ctrl – V.