Hi Pat, You are upgrading from Yosemite to Sierra, you first require to install macOS Sierra.app - NOT the Sierra Combo 10.12.5 Combo Updates update the base version of a Mac OS X release to the version specified in the Combo Update, including all intermediate updates. For example, the Combo Update updates any earlier version of macOS Sierra 10.12.0 to macOS Sierra 10.12.5 using a single installer, as opposed to installing the individual 10.12.1, 10.12.2, 10.12.3, and 10.12.4 updates. Go to this link <https://support.apple.com/en-au/HT201475 <https://support.apple.com/en-au/HT201475>>
Make sure you do backups, check updates for applications you use that they are compatible, do the preparation! Cheers, Ronni ----------- > On 3 Jun 2017, at 6:39 pm, Pat <[email protected]> wrote: > > I also am having a problem updating from OSX 10.10.5. I first downloaded the > latest Sierra Combo to 10.12.5. When I tried to install it, the message said > it could only be installed on 10.12.2. So I downloaded the Combo installer > for that. When I tried to install it, it said it could only be installed on > 10.11.1. > > I have downloaded that Combo now, but it still says it has to be installed on > 10.11.0. I have searched for such a Combo installer without success. > > Need some advice as to what to do. I thought Combo installations should work > on any previous OS. Certainly, Yosemite is the last iteration of OSX 10. The > Apple "support help" has not provided any information. > > Hopefully, > Pat > >
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