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Old 08-17-2016, 02:18 PM   #14
eschwartz
Ex-Helpdesk Junkie
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Posts: 19,421
Karma: 85400180
Join Date: Nov 2012
Location: The Beaten Path, USA, Roundworld, This Side of Infinity
Device: Kindle Touch fw5.3.7 (Wifi only)
Quote:
Originally Posted by Yourcat View Post
@picree: The factory reset removes the jailbreak (aka the file with developer keys). De- and re-registration may also remove the JB. Amazon could update the developer keys OTA if they need to lock out developers. So there are some options to loose the JB.
The bridge code which was likely installed during the initial JB process is executed during startup and restores the JB.
I hope this helps to understand the process a little bit.
No.
  • Factory reset removes the bridge code and deregisters the device.
  • De-registration uninstalls the MKK.
  • Firmware updates uninstall the jailbreak.

Re-registration does nothing.

The bridge code can fix the other two via a reboot. Therefore, the bridge code is the most important component. And firmware updates aren't always under your control -- but factory resets are!

As long as you haven't installed a firmware update, you still have the jailbreak key (even after the factory reset nukes MKK in an absolutely permanent manner). But you will have to reinstall the hotfix pronto, especially since the jailbreak key has taken an increasingly backseat role in things.
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