Is IOS12 compatible with OS X Yosemite?

Is IOS12 compatible with an old MacBook Pro only running OS X Yosemite and iTunes12.8.0.150? Unfortunately, Apple has not come out with a new MacBook Air to which to upgrade beyond Yosemite.

MacBook Pro, OS X Yosemite (10.10.5), Iphone 7Plus

Posted on Sep 17, 2018 6:46 PM

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Posted on Oct 23, 2018 7:19 PM

After much work and effort and pain on a lot of people's part, I think I can summarize the answer:

  • Yosemite does not seem to be compatible with IOS12
  • However, in my case I was able to upgrade to El Capitan (10.11.6), despite the fact that:
  • My computer is old (late 2008)
  • there was no update path via the Apple icon and About


  • Apple Tech Support provided me with a link to upgrade to El Capitan and it works!
  • IOS12 and El Capitan are compatible.
  • However when I upgraded to IOS12, I initially could not back up the iPhone on iTunes, despite the fact I had just backed up the iPhone to iTunes a half hour before with the previous IOS.
  • there was no visible iPhone icon next to Music on Itunes
  • iTunes could not see the iphone
  • I called Apple Technical support and the rep ran me through restarting the computer in Safe Mode (shift key when restart)
  • After a very long time, the iPhone icon came up on Itunes
  • I rebooted normally and restarted iTunes and the iPhone icon was there.
  • I then successfully backed up the iPhone.


Thanks for everyone's effort. Now I don't have to immediately have to buy a new Mac (being announced at the end of October?).

116 replies

Oct 5, 2018 11:45 AM in response to Joe_Stephano

Not true. If you can install Yosemite, you can install El Capitan. Same system requirements.


Also, some 10.6 preloaded Macs are compatible 10.12 Sierra to Mojave, and all those Macs can go directly to Sierra:

Which 10.6 Macs can install Mac OS Sierra through Mojave (10.12-10.14)


Older 10.6 Macs, the trick is to get the original installer discs if post March 15, 2010 and before 10.7's release. Applecare offers those at a nominal value.


If it is pre March 15, 2010 Mac, then you can get the retail 10.6 installer disc from the Apple online store calling 1800-MYAPPLE.


Once you install 10.6 from either original discs, or retail disc above, use the 10.6.8 combo update and security update to enable the App Store and install of 10.11 from the link below:


El Capitan System (10.11) requirements for upgrade


If your Mac is newer than 10.7's release of July 20, 2011, it is also compatible with with 10.12, which is still available free once you upgrade to the free 10.7.5. Here is the free upgrade link for Sierra and the items that are compatible with it: Upgrading to Sierra


The only reasons for staying on Yosemite include:


1. No backup. You should have a backup anyway.

2. No updates to third party software for El Capitan or Sierra compatibility. Many alternatives exist on the App Store.

3. Preference to remain on iPhone versus Apple's new Photos App, introduced in 10.10.3.


I know it is a bit an imposition to downgrade to 10.6 first before installing 10.11, but sadly that's the way Apple's Mac App Store has the updates arranged for some older Macs. But all do have an upgrade path.

Oct 10, 2018 2:13 PM in response to ShelbyDA24

I recommend not updating your phone and make sure to turn off automatic updates on your phone so that your apps continue to work. I am on a 2014 MacBook Pro running Yosemite. And I am on iTunes 11. You might be able to downgrade your iTunes I would look into that. I will not upgrade past Yosemite because my FCP and photoshop will no longer work. All that said, I did update my iPad mini retina 2 directly on my iPad not through iTunes and afterwords I was still able to back up to iTunes without a problem. But I did not try this on my iPhone SE and intend to not upgrade my iOS on my iPhone moving forward.

Sep 30, 2018 5:36 PM in response to a brody

One other thing to consider is the fact that Image Capture should still be able to see your photos and movies on your device even after updating the device. Your synchronization of bookmarks, music that you ripped, and settings to your Mac though can only be done to the Cloud if you don't have an operating system capable of syncing it on your own computer. At least though once you have backed up your Image Capture data, you have less data that will have to go on the cloud.

Oct 10, 2018 1:11 PM in response to ckuan

I have Itunes 12.8.0.150 and Mac OS X 10.10.5 and iTunes does NOT recognize my iphone 7 now that I've upgraded to ios 12. It says I need Mac X OS 10.11.4 or later. I tried going to the link to download iTunes 12.8, but when it was installed, it turned out to be 12.8.0.150 again. My Macbook Pro is vintage late 2007 and doesn't have but 4 GB Ram and I'm afraid El Capitan will mess with performance big time. Also, I don't know if my MS Office and other apps will work with El Capitan. What to do?

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