How to upgrade Mac 2010 to firmware MP51.0089.B00?

Question

Hello. I need to upgrade the firmware on my Mac Pro 2010 in order to be able to update from Sierra to High Sierra. All the instructions I've read tell me that the firmware update is contained in the High Sierra installer package, but the update does not work when I run the installer. I am looking for a way to update the firmware separately from the High Sierra installation process. Do you have a firmware download solution for this?

Answer 1

You can download the firmware update separately from Apple's website. Here's the link: https://support.apple.com/kb/DL1321?locale=en_US. Follow the instructions provided and the firmware update should install successfully.

Comments

Unfortunately the link provided  https://support.apple.com/kb/DL1321?locale=en_US  does not offer the desired firmware MP51.0089.B00.  Note the date on the linked page: Oct 28, 2010.  It is just MP51.007F.B03 offered for download there.  Apple does not offer MP51.0089.B00 as a separate download -- see its page https://support.apple.com/en-us/101198 dated October 26, 2023.  Probably the only way to upgrade the firmware to MP51.0089.B00 is in the process of making a High Sierra volume. So if, for some reaon, you only want the firmware without High Sierra make a High Sierra volume and erase it.

Answer 2

Question. Ability to boot to High Sierra is good, but is there any downside to upgrading the firmware from MP51.007F.B03 to MP51.0089.B00? Will I still be able to boot to, say, Lion?