[knc1]

Originally Posted by eschwartz

More background from MadMAXXX's debricking-via-fastboot thread: https://www.mobileread.com/forums/sho...=269099&page=5

Implies that for whatever reason and whatever motivations, the diags system just isn't working anymore.
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In the thread to which you linked, 'diags' wasn't working because it was erased -

And it did not stop us from recovering the Kindle.

'Diags' was not loaded until long after the Kindle once again had a working 'Main' system.

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I'll repeat this one more time:
Get the 'Main' system working properly, then, and only then, be concerned about the 'Diags' system.