For the security model to work, the information has to be irretrievable if the security chip breaks. Otherwise a motivated party can simply solder-on a new security chip to get into a locked phone, or compel google to give up the keys.
I suggest you look into reflowing the security chip. Chances are that it's a solder failure, rather than something more difficult like electromigration or something inside the chip.
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[ 0.18 ms ] story [ 10.0 ms ] threadI suggest you look into reflowing the security chip. Chances are that it's a solder failure, rather than something more difficult like electromigration or something inside the chip.