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Jul 25, 2017 at 13:56 comment added Max Savin Additionally, if you look at EFI removal, it's possible on some older models but not the newer models. There was also a vulnerability a few years ago, to which Apple indicated models released after 2013 are not affected. Finally, Apple has a team working on EFI after the Thunderstrike vulnerability was publicized. So, it's reasonable to assume things are constantly changing.
Jul 25, 2017 at 13:46 comment added Max Savin I have tried it: I went to the Apple's service center and called Apple Support seeking ways to reflash firmware, they both indicated that there is no download or documentation for the new models. Apple service said all they can do is reinstall the OS. However, they could not verify if reinstalling the OS reinstalls the firmware. Apple support opened a ticket for their engineering team, I'm currently waiting to hear back.
Jul 20, 2017 at 16:04 comment added Allan What makes you assume that an Intel EFI based computer has suddenly changed the way the EFI firmware is flashed is suddenly different because it's 1) older, and 2) an unrelated device using a different architecture does it a different way? If the info is wrong, then you should indicate that you tried it and determined that it doesn't work, not assume it's incorrect because it applies to "older models."
Jul 20, 2017 at 8:55 comment added Max Savin Again, you missed the core of the question: Is it possible to reinstall MacBook firmware? The question you referenced refers to updating old models. You could tell because the Apple support page they reference has not been updated for many years. You might want to look into iPhone DFU mode you get what I am saying.
Jul 19, 2017 at 0:21 comment added Allan I updated my answer with info directly from Apple. The folks you spoke to weren't "engineers" by any stretch - they are techs - and you definitely didn't speak to their "top one." Their "best" techs are reserved assigned accounts .
Jul 19, 2017 at 0:19 history edited Allan CC BY-SA 3.0
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Jul 18, 2017 at 20:02 comment added Max Savin Ah, previous Mac's shipped with an OS installation and a Firmware installation disk. Apple now does OS installation over the internet or USB, but they kind of killed the firmware part. I called Apple support about this and their top person did not know how it works on new models... I am waiting/hoping to hear back from their engineers now.
Jul 18, 2017 at 14:14 comment added Allan Oy vey... Please explain how you interpret the very last sentence of my answer.
Jul 18, 2017 at 13:21 comment added Max Savin Firmware updates are not the same as reinstallation..
Jul 17, 2017 at 16:19 comment added Allan DVD or USB flash is the same thing - it's just DVD has fallen out of favor. However, you can create a DVD based install which would include whatever firmware updates that would be required: apple.stackexchange.com/questions/235243/…
Jul 17, 2017 at 13:43 comment added Max Savin The response about reinstalling MacBook firmware could be inaccurate because Apple no longer ships firmware CDs. The answer in reference was from 2013. There is evidence that Apple changed how this works after in models that shipped after 2013.
Jul 17, 2017 at 12:53 history answered Allan CC BY-SA 3.0