Sierra upgrade possible on a MBP mid 2009
I have a customer with a:
Apple MacBook Pro "Core 2 Duo" 2.8 15" (SD) Specs
Identifiers: Mid-2009 15" - MB986LL/A - MacBookPro5,3 - A1286 - 2325*
It has a 64 bit Architecture and therefore should be able to take Sierra.
But then so does my early 2009 MacPro and I had to do a firmware hack to make it think it was a 2010 before I could install.
Does anyone know how to get it to install, or if it will?
The system should run on this machine so I'm thinking of duplicating her hard drive onto another drive. Put that drive onto a newer machine, install Sierra then swap the drives and see if it runs?
Tried to start up from an external SSD drive with Sierra on in and got the circle with a bar on it. So it's a no go unless I can either do a firmware upgrade or possibly change the plist.
This may be the way to do it: