Switch on your MBP and immediately press and hold the Option Command ⌘ R keys *.Make a full backup of your data using Time Machine (or your preferred backup solution).My recommendation would be to do as follows: Since you've already gone through quite a bit of frustration, your best bet is to go through a total reinstall process. So, cutting a long story short, you're most likely missing this firmware update. And, with the move to the APFS file system, firmware updates were required on pre-existing Macs with SSD drives to support macOS High Sierra (and above) as they required APFS to be installed. You've never installed macOS High Sierra on your MacBook ProĮssentially, some years back Apple started automatically including firmware updates (if/when required) within macOS updates/upgrades.You've already tried (directly or indirectly) resetting the NVRAM.Your MBP still has the original Apple SSD installed.You've correctly identified your current Boot ROM version.Your question does miss some key details, so this answer makes the following assumptions: What should I do? Change the logic-board seems expensive and stupid if the problem is just a upgrade.
MACBOOK PRO EFI FIRMWARE UPDATE 2.7 INSTALL
The output was good, it sets the nvram to install the update after the reboot but nothing. I tried to install it manually with bless command. I tried some tool to install the firmware right from highsierra installer, nothing. I tried to use El Capitan from a external drive, still nothing.
I tried a fresh install of sierra, but no firmware updates. I also tried to do a update while in mojave, but nothing. I tried to boot with mojave using carbon clone (I cloned the hard drive from my girlfriend's macbook updated to mojave). Install mojave on a external drive didn't help (same firmware error). Error while verifying the firmware.Īfter many tries and repairs to the disk, I found the problem: my firmware.
MACBOOK PRO EFI FIRMWARE UPDATE 2.7 UPGRADE
I found this problem while I tried to upgrade to mojave (I'm runnig Sierra right now). My bootrom version is 07 and according to this ( ) table I'm running a veeery old firmware, updated to yosemite. I have a Macbook pro 13" retina early 2015 (MB 12,1).
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