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 -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
