• IF YOU ARE ALREADY JAILBROKEN: DO NOT UPDATE! CHECK you have updates blocked on your kindle. If you’re not sure, you can do so by downloading the UpdateBlock Status app from Kindleforge. It will tell you if you have updates blocked or not.
• IF YOU PLAN TO JAILBREAK OR ACCIDENTALLY ALREADY UPDATED: FILL UP THE STORAGE SPACE NOW.
Kindles have a nasty habit of auto updating mid process. Do not leave any room for the device to accidentally update. If you’ve already accidentally updated, there’s no choice but to leave it on airplane mode and fill up the storage so it cannot download another update accidentally. Current brand new out of the box kindles should still be running an older firmware for now, so if you plan on buying one soon, make sure you fill up the space FIRST before connecting it to the internet.
Source from the Jeff Dammit Discord server. Acctually already some days old. I sadly only saw it now.
The most Recent Firmware 5.18.6 FIXED this jailbreak. So make sure you have a Firmware older than that and stop the device from updating!
Fill up the Space of the Kindle and Block autoupdates with the Hotfix. You can check if your Autoupdates are blocked with the "UpdateBlock Status" App from Kindleforge (Custom App Store)
If your Kindle is already on a newer version it's recommended to just fill up the entire device anyways to make future Updates impossible so that you don't accidentally get yet another jailbreak fix update when a new jailbreak releases