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I am attempting to run an Apple Hardware test for my late 2012 IMac 27”. However, when I run the AHT from internet startup by holding the D key, I receive an error: Error: 8000000000000003, Cannot load ‘EFI/Drivers/TestSupport.efi’ Status: 0x00000003 Does anyone know how I can run the AHT?
Apple messed up its firmware update which messed up diagnostics. What is your macOS release?
