Help:About Firefox: SHOWS 4.0 - but when I attempt to download an add-on - it says I still have 3.05
I have tried to upgrade to 4.0 many times - but when I attempt to download an add-on that is only for 4.0 - it says that I have version 3.05 - need to update. But when I go to Help:About: - it says up to date - no updates available.
I have tried to upgrade to 4.0 many times - but when I attempt to download an add-on that is only for 4.0 - it says that I have version 3.05 - need to update. But when I go to Help:About: - it says up to date - no updates available.
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See Reset your user agent in this article.
https://support.mozilla.com/en-US/kb/Websites%20or%20add-ons%20incorrectly%20report%20incompatible%20browser