Ah, you think someone would do this to brick a device they don&#x27;t own in the field?<p>Then I would make the method accessible, but behind some kind of authentication method.  User mails you and asks for the way to install it, once you&#x27;ve verified it&#x27;s really them you provide the <i>unique</i> backdoor to that machine.  Might be one way to approach it.<p>You can burn a unique serial number or whatever directly into the IMX6, there&#x27;s a eFuse&#x2F;OTP driver that lets you access it from the filesystem.