I thought “Well, that’s an easy question to answer—via the Mac App Store, of course.” As it turns out, that’s the right answer, but it was much harder to find than I expected it to be. I started on the Purchased tab in the Mac App Store app, where you can (theoretically) see all past purchases, including prior Mac OS X versions. However, those old releases stop with Mac OS X El Capitan from 2015; neither Sierra nor High Sierra are listed.
Next I tried searching the Mac App Store for Sierra, but that nets only Server and High Sierra, and a few apps that appear to have gotten away with using “Sierra” in their descriptions:
I then tried the Apple Developer site, but they don’t offer Sierra for download either.
Somewhat stumped, I then started searching, and after way too many attempts, I finally landed on this useful page at Stack Exchange, which attempts to explain how to download all older versions of Mac OS X/macOS. Here’s the relevant bit for Sierra:
For OS versions since Sierra.
Sierra itself has now vanished from everybody’s Purchase History. However, Apple are keeping Sierra fully available, even though High Sierra is out. No Apple ID is required.
Given how much trouble I had finding this page, I thought I’d post it here for anyone looking for Sierra. Going forward, keep that Stack Exchange link handy, as it should be updated in the future as new releases come out.
The nice thing about the reinstall is that it’s nothing like a reinstall from days of yore—you’re not starting from scratch, so you won’t have to reinstall everything when done. Apple makes this clear on the support page:
You can install macOS over the same version or earlier version, without removing your data. You don’t need to remove or disable the existing system first.
I say this with crossed fingers, but it seems that this reinstallation has potentially solved my Bluetooth issues. For the last two days, I’ve used my Bluetooth headphones without any static issues at all. In addition, none of my Bluetooth devices have disconnected. There is one comment from slajax on the original article that states this didn’t work for them:
I’ve been having the same issue but with the gen 1 track pad and keyboard. I reinstalled the OS, PRAM etc replaced them with the gen 2 key board and track pad and also had the apple store replace the bluetooth antenna but still having the same issue.
If you’ve reached the breaking point with your macOS Sierra/Bluetooth issues, it might be worth the 30 minutes or so a reinstall takes. But please, if you go this route, make sure you have a good backup first, just in case. And if it works for you, please post in the comments (either here or on the original post), so that others might see, too. I promise to do the same if my now-working Bluetooth turns out to again be not-working Bluetooth.
It dawned on me, though, that if that forum post ever vanishes, I’ll be in trouble with future new Macs and/or reinstalls, so I thought I’d document it here, too. Read no further unless you (or a family member) play Sims 3 and want to get it working in macOS Sierra. And really, try the linked forum post first; this is just a backup plan.
For those who aren’t aware, defaults write is a Terminal command that can be used to modify applications’ settings. While you can use these commands to modify settings that are present in an app’s Preferences panel, the more-common use of this command is to set non-visible (hidden) prefs that you won’t find in the GUI.
Here are three of my favorites—three that not only perceptually but actually increase the speed of your interactions with your Mac. I still, to this day, execute these commands on any new Mac I set up.
Sheets are the attached windows that roll down from (and up into) the title bar of windows, such as the Save dialog in most macOS applications. The animation of these sheets, while visually appealing, does take some time.
Using this tip, you can basically eliminate the animation, greatly speeding the appearance and disappearance of sheets. Given how pervasive sheets are, this tip can save a lot of time each day. While the other tips offer actual speed improvements, they’re nothing like the change you get by changing the sheet animation speed.
As a test, I opened and closed a Save sheet in TextEdit five times, both before and after applying this tip:
If you’re scoring at home, that’s a 47% reduction in the time required for just five cycles of a Save sheet.