Hello,
I have MBP 17 late 2011. It comes with Lion, and I updated it to Mavericks. I don't want to update to Yosemite or El Capitan.
And I want to keep my clean install sequence - the OS downloaded by default is Lion.
So my question is a little bit dumb may be, but I want to be sure.
Does Mac EFI 2015-001 Update change the OS set by default for my MBP or not?
Thanks in advance.
MacBook Pro, OS X Mavericks (10.9.5)
Hello malembenign,
Thanks for using Apple Support Communities.
If I understand your post correctly, you're concerned about the OS of your Mac changing when you install the Mac EFI Security Update 2015-001. Installing this update has zero impact on the OS that you Mac is running on. In order to use a newer OS, you would need to manually update to it via the App Store. If you'd like to learn more about what is in the Mac EFI Security Update 2015-001, then please see the link below:
About the security content of Mac EFI Security Update 2015-001 - Apple Support
Take care.
Does Mac EFI 2015-001 Update change the OS set by default for my MBP?
