How can I update to Safari 16 without buying a new MacBook?

Allan Jones wrote:

Grant, we are starting to get those errors in 10.13 with Safari on Mrs AJ's old 2011 iMac. Started after the first of the year, so some sites may have started rolling off support for old Safari versions. I'll ask her which sites she had trouble accessing.

Allan, thanks for your reply. It was serious question, as I do not yet understand why reasonably recent versions of Safari would be deemed "not good enough".

I did some research on the the big "unplanned obsolescence" that occurred in 2015 where Secure Socket Layer (SSL) was found to be not as secure as expected, and TLS was rapidly introduced to replace it, leaving Macs running Safari and every other browser pre-2015 high and dry. But that left Safari and other Browsers compatible with 10.11 El Capitan still usable.

?Is this another emergency?

¿is this just some sites saying, "older than this version of Safari are no longer getting security updates"? or something more sinister?

Grant, we are starting to get those errors in 10.13 with Safari on Mrs AJ's old 2011 iMac. Started after the first of the year, so some sites may have started rolling off support for old Safari versions. I'll ask her which sites she had trouble accessing.

Dear Candace,

You cannot run a newer version of Safari on that computer, but the latest version of FireFox runs on Mac systems as old as mac10.12, and most sites support the latest version of FF.

Get Firefox ONLY from the develpers' site: https://www.mozilla.org/

It is either that or go shopping for a newer computer.

the Browser built into 10.13 should be adequate.

who says you need Safari 16?

Mostly you just need a more modern Browser than Safari on High Sierra like Firefox or Brave.

https://brave.com/

Curious indeed. Like I said, this is the first time she's seen that message on the old iMac.

I see it as an opportunity to buy Mrs AJ a new iMac! We both prefer Safari over other options.