update safari for high sierra

Safari is tied to the version of macOS installed. Normally, Apple will not offer a Standalone installer of Safari.

With a newer version of macOS will come a newer version of Safari.

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.

With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.

Safari will open a redirect and open the Apple Store where the download can commence

Tips Big Sir Upgrade Released Nov 2020

Tips Monterey Upgrade  Released Oct 25, 2021

Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS

Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround.

Suggest using Go64 to find 32 bit application before attempting the upGrade. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.

Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal  operation of the OS and may even Corrupt the OS requiring a Reinstallation

Your question is unclear. Do you only wish to update Safari? Or do you wish to upgrade Sierra to a newer OS? As you may know, Safari is installed with the Macs operating system and normally can not be individually installed. A newer version of Safari is normally installed when the OS is upgraded. If that does not suit your needs, then the next bit solution is to install another browser such as Firefox or one of the many which are available on the Apple App Store's site.

Hello, BSKEDR1.

Safari is typically updated by installing Software Updates that may be available for your macOS. You can check and see if any updates are available by clicking Apple menu > About This Mac > Software Updates... If any updates are available they will be presented that and you can install them. If no updates are listed, then it is assumed that none are available for your current macOS version.

The only other way to update Safari is by upgrading the macOS to a newer generational version as High Sierra to Catalina, for example.

If you find the Safari has no updates available and it is lacking somehow or being disallowed at certain websites, you might download some alternate browser such as Brave or Firefox.

Also, to be clear, software update generally means to install software to update the macOS currently running on the Mac; update Catalina 10.15.1 to Catalina 10.15.7, for example.

A software upgrade is usually a generational step up to a newer macOS; upgrade from 10.13 High Sierra to 10.14 Mojave, for example, or from 10.15 Catalina to macOS 11 Big Sur.

Upgrades do not happen automatically. They must be initiated by a user with admin privileges.