Sniffing around, maybe this is as simple as applying a firmware update?
Something like this:
https://www.mobileread.com/forums/sh...&postcount=392
Quote:
1)At first I had to download the correct Firmware for my device (In my case it was "factory_KT3_5.8.0_initial.bin" )
2)Then I renamed it to update.bin (necessary in a later step) and put it to the root directory of my kindle
3) I connected the Serial-USB-Converter to my kindle
4) I startet the device and interrupted the booting sequence by pressing the "enter" button to get into uboot
5)Here I entered the command "run diags_boot" to get into diagnostics mode
6)After the diagnostics mode was fully loaded I pressed enter to get into kindle Login
7)I logged in with "root" and password "mario"
8)When I got logged in I entered "reboot"
9)Now in the boot sequence there was an entry to get into recovery mode. It was shown up just for about 1 second. When this entry was shown I had to press "enter" to get into this mode.
10) Now I got into recovery mode.
11) Here I had 10 seconds time to choose one of the operations.
12) I entered "u" for "Update using update*.bin file on FAT Partition"
13) When the update was finished I was on Firmware 5.8.0
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