Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. Visit this Apple Support page to find your Mac OS version.
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version that Apple supports. Visit this Apple Support page to learn more about upgrading your Mac.
Note: If you have Mac OS X 10.7 (Lion) or 10.6 (Snow Leopard), you will need to download OS X El Capitan before you can upgrade to the latest Mac OS.
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While insecure versions of Firefox will continue to work on OS X 10.8 and earlier, using an up-to-date version of Firefox on a supported version of Mac OS will provide you with the best and safest user experience. Flash player for mac os x 10.6 8 download. https://keengroup.weebly.com/it-says-no-update-available-for-os-x-sierra.html.
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Since developers are constantly improving their apps, the Mac App Store keeps track of your apps and tells you when an update is available — including OS X software updates. Update one app at a time or all of them at once, for free. Apr 08, 2013 How do I connect my MacBook Pro (Mac OS X 10.6.8) with an HP w2207 monitor? I see from the Apple Support Communities forum that in April 2010 there were problems with this when a large number of people upgraded from Snow Leopard 10.5.8, and their Macs wouldn't recognize this monitor, when previously they had done so prior to upgrading their OS.