![For For](/uploads/1/2/6/5/126532684/551960827.jpg)
The App Store Updates page only informs you of updates available for the OS you are currently running.
Oct 29, 2020 Firefox 82.0.2 - Fast, safe Web browser. Download the latest versions of the best Mac apps at safe and trusted MacUpdate. Mac users interested in Mozilla firefox for os x 10.5 generally download: Firefox 76.0 Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide.
As you are running an older system then you are probably up to date on that system
If you want to install a newer OS that is called an Upgrade.
The model and year of your Mac will determine which macOS you can upgrade to,
read the following links.
Before upgrading make a full back up of your Mac.
Check that third party apps you use have updates available for the new OS.
Check that your printers/ scanners etc have updated drivers and software available for the new OS.
If you are considering upgrading to Catalina be warned that it does not support 32bit apps.
![Download Download](/uploads/1/2/6/5/126532684/270070410.jpg)
Firefox Download Mac Os X
Your Mac is probably running 32bit apps and these will need to be updated to 64bit apps,
some updates may be free, some may be paid. Use this app to discover which apps you have
are 32bit, https://www.stclairsoft.com/Go64/. Once the list has been created you can then
Firefox For Mac 10.9.5
contact the developers of the apps to see if they provide 64bit updates.
Dec 21, 2019 11:07 AM