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Yes, the T2 always "remembers" its unique ID (ECID) even if you turn Full Security off and on again. It is never discarded. However, this is really not the question you would like to be asking: The ECID is burned into the T2 chip and cannot change. The actual signature file created when the operating system is installed is stored on your disk drive as an ...


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You have a Mac with a T2 chip, which requires an Administrator account with both a signed certificate and a SecureToken linked to that account, and the account that tries to change any of those settings in Recovery has to have the same matching SecureToken, a copy of which is held by the BridgeOS running the T2 chip. Your IT folk have (quite rightly) locked ...


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