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Is verion 4.0 available only on Android

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The website of an organization we work with has been updated, and they take firefox 4.0 or above. We have firefox 37, on our desktop Windows XP. Can we get the 4.0 version, or is 4.0 available only on Android?

The website of an organization we work with has been updated, and they take firefox 4.0 or above. We have firefox 37, on our desktop Windows XP. Can we get the 4.0 version, or is 4.0 available only on Android?

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Why do you need such a old version? The Firefox 4.0 (four point zero) came out March 2011 on desktop and was the first version Released for Android at time.

Firefox 37.0.1 (thirty-seven point zero) is the current Release on desktop and Android.