Safari
How do I download the latest safari update?
iMac, iOS 6.1.6
What Mac OS X version do you have, and what Safari do you want? Safari is an integral part of Mac OS X so in most cases you must upgrade Mac OS X to get a newer version of Safari. There are only a few OS X versions for which Safari itself can be updated.
If you have opened the App Store on the iMac and there are no updates showing, then there is not an update available to your Safari.