On the Kindle, /var/local/system/fixup is not overwritten by an update, and is sourced at boot. (As an emergency just-in-case Lab126 ever needs to use it I guess.) The bridge is that file. I don't know why Amazon doesn't work harder to invalidate jailbreaks, but I am happy.
Recent updates have fixed a longstanding exploit which allowed the original jailbreak. fw >= 5.4.5
Last edited by eschwartz; 09-22-2014 at 12:10 PM.
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