[LostOnTheLine]

Originally Posted by Pedja

I can confirm it worked for me, just 2 days ago I did the jailbreak to my PW4 (10th gen) and downgraded to 5.13.3 following this Downgrading your Kindle Firmware
First try, no issues.

I don't like that guide, not sure if it works, but it requires unnecessary hassle, downloading a file with no source information, etc.

1. Before you proceed, if you have disabled OTA updates, restore it now to prevent complications later.
2. Install the Downgrader extension as you would any other KUAL extension.
3. Drag and drop the downgrader folder containing the bin, config.xml, menu.json into the extensions folder on your Kindle's visible storage's root.
4. Launch KUAL, then Downgrader.
5. Pick the device that you have, make sure it is the right device as this tool sets up the version.txt file to match that of the lowest denominator of the device, thus tricking the Kindle's updater to force an "upgrade".
6. Once you've selected your device, your Kindle will restart, now with the lowest version possible spoofed in the system.
7. Plug in your Kindle (making sure that USBNetwork is off and USBMS is on), then copy the update file you've downloaded earlier to the Kindle's visible storage root.
8. DO NOT eject or unplug the USB cable, as this will make the Kindle's OS auto delete the update file we just copied to. Instead, hold the power button until your Kindle restarts. Now it should boot into the updater, and begins your firmware downgrade.

Instead I would use this thread https://www.mobileread.com/forums/sh...d.php?t=347165

1. Before you proceed, if you have disabled OTA updates, restore it now to prevent complications later.
2. Install the Downgrader extension as you would any other KUAL extension.
3. Drag and drop the downgrader folder containing the bin, config.xml, menu.json into the extensions folder on your Kindle's visible storage's root.
4. Launch KUAL, then Downgrader.
5. Pick the device that you have, make sure it is the right device as this tool sets up the version.txt file to match that of the lowest denominator of the device, thus tricking the Kindle's updater to force an "upgrade".
6. This is where it differs
7. For this version you just copy the official kindle firmware you want to the root at the same time you copy the downgrader to the extensions folder. If you already have it installed just copy it to the root & go into KAUL > Downlgrader > Your Model
8. Your device will reboot & install the Firmware