Welcome to the Kindle Modding FAQ! Here you can find an exhaustive list of answers to some of our most commonly asked questions. Please don't try to read the whole thing (unless you're just curious), instead, please refer to this Table of Contents or use the search below.
A: Go to kindlemodding.org/jailbreaking/index.html for the latest instructions on how to run the latest jailbreak.
A: Check out the chart on the Kindle Modding Wiki!
A: Yes as long as you know what you are doing. Don't mess with the root filesystem unless you know what you are doing.
A: KOReader is an awesome alternative reader with fun features! Get it here: github.com/koreader/koreader/releases.
Install guide: kindlemodding.org/jailbreaking/post-jailbreak/koreader.html.
For a more detailed explanation on what KOReader is, check out their user guide!
A: Yup! With jailbreak access, you can customize the screensaver images with KOReader! Please note that this will only work when you have KOReader launched. (you need to disable "special offers"/ ads first!)
Disabling ads/special offers instructions: Internal Guide
A: You can download it here: MobileRead Forum.
For Kindles on firmware 5.16.3 or later please use USBNetlite: github.com/notmarek/kindle-usbnetlite.
To get started with USBNetwork/USBNetlite you can read the guide here as it applies to both of them: wiki.mobileread.com/wiki/USBNetwork.
To find more detailed info about USBNetwork/USBNetlite you can go here: MobileRead Thread.
/
├── .active_content_sandbox/
├── voice/
├── system/
├── screenshots/
├── mrpackages (another place for fun filled packages)
├── fonts/
├── extensions/ (this is where you put kual packages)
├── documents/
├── audible/
├── apps/
├── winterbreak.log
├── O/
└── jb.shA: Only if you are jailbroken first. See kindlemodding.org/firmware-and-flashing/downgrading. Note that you cannot downgrade below 5.18.1.
A: You are likely on an MTP kindle. Follow this guide.
Note: Ensure to delete any .partial.tmp.bin files or something of that sort when completing this step to prevent updates if you are susceptible to them.
A: You generally have 3 options. Either:
Note: Ensure to delete any .partial.tmp.bin files or something of that sort when completing this step to prevent updates if you are susceptible to them.
A: You have an incorrect .bin file. Ensure you are using the correct/compatible KUAL edition (try the other) or software update.
A: Run the 'Run Hotfix' or 'Run Hotfix/Bridge' scriptlet.
A: You may still be jailbroken! Search for ;log and if it says something along the lines of "no args passed", you are still jailbroken. Reinstall mrpi & kual and run hotfix, it should work.
A: You have the incorrect KOReader version. Refer to this list to find out which version you need:
A: Make sure you click "Show all assets" to view all of the versions.
A: Try this guide, or create an empty file named "DISABLE_CORE_DUMP" (no extension) in the Kindle root. The already existing logs can be safely deleted.
A: Fill up your Kindle with junk files, either manually or with the filler script, forget networks, and enable airplane mode. kindlemodding.org/jailbreaking/prevent-auto-update/
Or if you are on the 2024 refresh of the Kindle 11th Gen, any Kindle Scribe, or a 12+ Gen Kindle, follow this guide: mip-wiki.pages.dev/database/fillingstorage/
A: Either you have really long file names, or forgot to extract the WinterBreak files. Extract them first, and this should be fixed.
A: Varies per-jailbreak. You do for WinterBreak and AdBreak.
A: Here are your options:
If your Kindle is not supported, wait for a new Jailbreak.
A: This is because you have an MTP Kindle. Download Amazon's software to fix (or use the OpenMTP app). Note that only one app can connect to your MTP Kindle at the same time.
A: Try the below solution:
.active_content_sandbox/store/resource/LocalStorage (skip this step if the LocalStorage directory does not exist)Still doesn't work?
Force update to your current firmware, even if you have disabled OTA Updates. Quote: "You can also force an update by copying the firmware update file to your Kindle and, while still plugged in, hold down the power button until it restarts." Get the firmware version from here: kindlemodding.org/firmware-and-flashing/downloading-updates.html.
A: Run KOReader in the frameworkless mode instead.
A: Refer to this Reddit thread.
A: If you are on a firmware below 5.16.4, follow the Winterbreak2 guide. Otherwise, force the store to use cache and not the remote by connecting to wifi without a true valid internet connection.
A: Use WinterBreak2 or Update manually to 5.16.4. 5.16.3 is not supported. It has been reported not to work on 5.16.3 in multiple cases.
sh as root on the Kindle, and on most other devices you can jailbreak. You can check out this page on the Kindle Modding Wiki for a bit more explanation.sh (shell), so you can actually run the jb code.A: Make sure all files and the folder are copied to documents. If that doesn't work note that Illusion requires LanguageBreak/WinterBreak/AdBreak with Scriptlets (Universal Hotfix), and does not currently support 5.16.1.1. Ensure you meet this criteria, and try rebooting and clicking again if you are, indeed, compatible and have all the files.
A: Check out KindleModShelf.
A: Yes! It's called KindleForge. In order to get it, please go to the KindleForge GitHub and follow the instructions there.
A: Look at the KOReader Guide. Manually replacing the screensavers/using NiLuJe's screensaver hack is not recommended, highly dangerous as the Kindle is very specific around image formatting and type and making a mistake could easily lead to bricks. Penguins and some others are developing Screeny a safe way to have custom screensavers everywhere, but until that's completed use KOReader.
A: Kindle firmware is SF on 5.16.2.1.1 and below. Starting with firmware 5.16.3, all Kindle firmware is HF. SF software may not work on HF, and vice versa. That's why you need to select the correct package for your Kindle when installing something.
A: You should still be able to do everything you could do post-jailbreak as you would on an unjailbroken Kindle. Jailbreaking itself doesn't visually change anything unless you install apps or tweaks.
A: You are probably not actually jailbroken!
A: Yes! Dammit Jeff has made plenty of videos covering jailbreaking or installing utilities. Just always make sure to use up to date guides!
A: Make a ticket! We'll be here to help! (Just don't ping us)
A: You have 3 options:
NOTE: Personally, for react native, I would use KPPSimpleLauncher + Scriptlets instead of KPPLauncher!
A: Unnamed Jailbreak - an upcoming one. That's what it's referred to commonly in chat, remember that! You may also see it refered to as "ChromeCracker", which will likely be it's name when it releases.
A: Theoretically, yes, if your Kindle's secure boot is off (older devices). Otherwise, look at Linux chroots or Alpine for Kindles, which doesn't fully replace your Kindles actual OS. Please know that none of these are completely safe and multiple bricks have been reported. (Probably won't happen but beware)
A: Make sure that you have filled your storage, and then turn off Airplane Mode.
A: There is nothing you can do at this time, except be helpful in the community and spread this information.
A: You can use this repackaged zip (courtsey of GreenCat777) or Install KUAL using PEKI, once you see the KUAL booklet on your homescreen you can move on to the other post jailbreak steps!
A: This server is only for the Kindle E-readers, not the fire tablets. You are probably better off looking elsewhere.
A: Follow this.
A: Follow this.
Firmwares
5.19.xModels
Authors: PENGUINS184, USERNAME99, MONKEYINPRIVITE, GREENCAT777, PUMPKINLIME132, SCAM.NET, MERGEN3107, GreenCat777 [KNDL]
Last Updated: 5/2/2026