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Old 05-11-2016, 06:08 PM   #8
geekmaster
Carpe diem, c'est la vie.
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Posts: 6,433
Karma: 10773670
Join Date: Nov 2011
Location: Multiverse 6627A
Device: K1 to PW3
Quote:
Originally Posted by IFixKindles View Post
I'm not sure if this would work on yours or brick it. I had several PW1 which for some strange reason would register under 5.3.9, but not under later versions.

I was able to successfully downgrade the OS from 5.6.1.1 back to 5.3.9 by forcing it to update (downgrade) while still connected to the computer.

Attached to computer via USB. Transferred the 5.3.9 update bin file to the kindle.
DO NOT eject from computer. Instead, hold kindle power button until it goes into update mode. This skips the usual checking on disconnect that made sure you were not putting in an older update file than what was installed.
Great information. I did notice that newer kindles delete update files that fail their test on USB eject (and I saw in in installer scripts as well), but I did not know this can allow installing "obsolete" (i.e. hackable) firmware. Thanks! But of course, publishing it here means that lab126 will surely "fix" it (i.e. take away our ownership rights) soon.
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