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I installed FF4 on Mac OS 10.4.11. Says it cannot operate with my system. Old FF gone. New FF won't work. HOW DO I RECOVER?

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I installed FF4 on Mac OS 10.4.11. Says it cannot operate with my system. Old FF gone. New FF won't work. HOW DO I RECOVER?

I installed FF4 on Mac OS 10.4.11. Says it cannot operate with my system. Old FF gone. New FF won't work. HOW DO I RECOVER?

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You can re-download the previous version of Firefox from http://www.firefox.com/all-older.html