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How to recover the closed-configuration device been tampered

Question asked by Tsung-Chih Wang on Dec 12, 2017
Latest reply on Mar 13, 2018 by Marius Grigoras

Hi All,


My chip set is IMX6UL.

I have one closed-configuration device which been tampered.

Then I used mfgtool to re-download images to flash.

However, these images are illegal.. because I used the wrong keys to sign images..

The target cannot be booted up so far, it will enter into serial down mode.

However, I cannot use mfgtool to upgrade images at this time.

Could you tell me how to recover this target?
Or the target becomes brick permanently?