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Certain websites say I did not upgrade when I did

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Please Help!!! Certain websites say I needed to upgrade to the new firefox and I did. Websites still say I am working from the old firefox and that I still need to upgrade. I tried deleting firefox and reinstalling 2 times and it still won't work. I can get on the web, but it stills says I am working from the old firefox. What can I do?

Please Help!!! Certain websites say I needed to upgrade to the new firefox and I did. Websites still say I am working from the old firefox and that I still need to upgrade. I tried deleting firefox and reinstalling 2 times and it still won't work. I can get on the web, but it stills says I am working from the old firefox. What can I do?

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