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Firefox for iOS 5.1.1

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Is there a download for my old iPad with iOS 5.1.1 (cannot upgrade)

Is there a download for my old iPad with iOS 5.1.1 (cannot upgrade)

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The Firefox shell browser for iOS devices needs at least iOS 8.2 at minimum. For the private browsing feature you need iOS 9.0 and newer.

Mozilla is making use of modern API's that are only available on newer versions of iOS.