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I know its no help to you now as you have already sent it back but if the T2 on the iMac Pro was simply uninitialized or corrupted you can put it in to DFU mode
by Crosseye_Jack 6y ago
I know its no help to you now as you have already sent it back but if the T2 on the iMac Pro was simply uninitialized or corrupted you can put it in to DFU mode and use another mac and Apple Configurator 2 to restore the T2's firmware. https://help.apple.com/configurator/mac/2.7.1/#/apdebea5be51 https://help.apple.com/configurator/mac/2.7.1/#/apdebea5be51
- j-pb 6y agoI had a lengthy talk with apple support about this. They've advised against that, since the specific version of the T2 that specific iMac Pro shipped with, had a failure case where resetting the firmware would also brick it. At least that's what I've been told, could be that apple rather pays the shipping costs, than the support hours if something goes wrong ofc.
- Crosseye_Jack 6y agoBut you already had a brick so not a lot to lose esp if you are expecting Apple just tossing the mainboard when it’s returned anyway ;-) It’s a known issue that a MacOS restore can upset the T2. But yeah, if you can live without the iMac while Apple do their thing there is a valid argument to say “why waste a tech’s time researching and attempting a fix when Apple will cover the cost of sorting it.”
- j-pb 6y agoYeah, it's on their clock if they have to fix it. Also as a company you have a much narrower margin of time to return, than as a private person. And we didn't want to be stuck with a mac that kinda sorta works, but might break at any time. We solved the problem by returning the iMac Pro entirely, and instead getting a prev-gen iMac with maxed out specs. Got us into a similar capability range, no pesky T2, and saved like 3k.