Replaced my MacBook Pro Display and now stuck in Critical Update Loop / Slow Boot / No TouchBar

Yes, yes, yes... SMC, NVRAM, wipe disk clean, Internet Recovery, fresh install of Sierra, High Sierra, Mojave, Catalina, Beta of Big Sur. Diagnostics you say? Done and all good from hardware.


Sierra and High Sierra seem to function in terms of operating macOS without the touchbar, so did Big Sur. For some reason Catalina can't.



Touchbar worked fine before display replacement. My Macbook Pro worked fine after display replacement...until the Catalina update.



Then I started to take a look at the software.


The EFI firmware for the T1 seems to only be manually reflashed. Internet Recovery or fresh macOS installs are supposed to take care of that, albeit not with the MBP 15" 2016 (13'3). I don't have a high level understanding of hidden folders, mounting, moving, duplicating and installing volumed through Terminal, Single-User Mode code. The issue seems to be best documented here https://blog.eriknicolasgomez.com/2016/11/30/the-untouchables-pt-2-offline-touchbar-activation-with-a-purged-disk/#offline-upgrades.


Since the inception of the Touch Bar MBPs, the issue of T1 firmware not being activated has been documented, and it seems many have experienced their laptops bricked by updates interrupted, updates done correctly. The most concerning part is that the bug was reported and it's reproducibility is marked as "always". https://openradar.appspot.com/29407715


This begs the question, what do customers do when their perfectly functioning machines are no longer functioning? Out of pocket another $800-$900 for a new logic board, as recommended?


The only reason I was changing my display in the first place was because of a flex cable issue that caused spotlighting and eventually failure on my screen when opened passed 45degrees. The new display assembly cost me $500 for the part, cost of labor was another $100. We're talking about an additional 1500 dollars to fix faulty hardware and software.


I simply want to have my quality machine to work with quality. And if there's a fix that may be a security risk, at least have Genius Bar reps equipped enough to fix firmware flashed with the combo ARM/x86 processors so that people don't go down 2,000 USD plus new logic boards (which would be unecessary if software is the issue).


My question is what can I do? I know I'm not the only one. You guys have collected all our money. You're a trillion dollar company now. Thanks. Thank you for showing that's possible, I'm looking for a fair way to have a working computer that can keep up with your reputation of your past products.


Can someone help?


P.S. This is what a trillion dollars looks like in numbers. $1,000,000,000,000.





MacBook Pro 15″, macOS 11.0

Posted on Sep 20, 2020 10:35 AM

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6 replies

Sep 20, 2020 10:42 AM in response to Aramazt

You guys have collected all our money. You're a trillion dollar company now. Thanks. Thank you for showing that's possible, I'm looking for a fair way to have a working computer that can keep up with your reputation of your past products.

...................

Sorry but you are not addressing Apple here. We are end users like you. The only Apple employees are the Hosts and, in the ~20 years I've participated here, they don't have time a to read or act on complaints posted here.


The only way to get this type of concern before an Apple employee is a business letter of a feedback link:


Feedback - MacBook Pro - Apple







Sep 20, 2020 10:45 AM in response to Aramazt

Why don't you ask the shop that replaced your display to fix this problem that they, most likely, caused. Surely, they must warrant their work for some period of time. An Apple Store warrants their repairs for 90 days.


After a short search on Google, I found How to Fix the Critical Software Update Problem on Macs that provides a fix for the Critical Update issue. See if it helps.


Oh, the only difference between one billion dollars and a trillion is ",000." Hardly noticeable. What's the point?



Sep 20, 2020 10:55 AM in response to Kappy

Hey Kappy,


Thank you for the link. Trust me I've been going through everything I can find for a week now.


The repair shop says it's a software issue and many Genius bar folks have said it's a logic board issue to others who have had this issue (from what I've read). Because this is a T1 chip issue, if an update is interrupted and firmware corrupted there's no real fix for that, despite code overlays with new OS updates. Unlike the T2 that has a Apple Configurator 2 option for entering the OS into DFU mode (similar to the iPhones).


The fix from apple tends to be a new logic board (or top case), which (for me) is prohibitively expensive.


https://openradar.appspot.com/29407715

https://openradar.appspot.com/radar?id=6115045738020864

https://blog.eriknicolasgomez.com/2016/11/27/the-untouchables-apples-new-os-activation-for-touch-bar-macbook-pros/

https://blog.eriknicolasgomez.com/2016/11/30/the-untouchables-pt-2-offline-touchbar-activation-with-a-purged-disk/#offline-upgrades

https://eclecticlight.co/2019/07/27/what-makes-macos-updates-more-complex-t2-firmware-updates/

https://github.com/Dunedan/mbp-2016-linux/issues/52

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Replaced my MacBook Pro Display and now stuck in Critical Update Loop / Slow Boot / No TouchBar

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