u/Customer-Worldly

From what I've read in this sub, basically factory reset doesn't actually factory reset. It doesn't fully remove the jailbreak, so things might be left in a weird in between state. For example, having the update blocker still on (which is the default for newer jailbreaks) after a "factory reset" and a Kindle that requires checking for updates during setup can cause issues for example.

I see too many people foot gunning themselves:

https://www.reddit.com/r/kindlejailbreak/comments/1vru363/kindle_bricked/

https://www.reddit.com/r/kindlejailbreak/comments/1vr0g11/what_happens_to_a_jailbroken_kindle_after_factory/

https://www.reddit.com/r/kindlejailbreak/comments/1vppeas/kindle_jailbreak_damaged_my_kindle/

https://www.reddit.com/r/kindlejailbreak/comments/1unq122/do_not_factory_reset_your_jailbroken_kindle/

One of the KCC's main features is converting Humble Bundle manga PDFs to native formats for Kindle, Kobo, ReMarkable, and other eink ereader devices for maximum image quality and significantly smaller file size. 

The app solves many common problems of using the files directly provided by Humble Bundle like removing margins for smaller screens, better handling of 2 page spreads, fixing gray artwork to be black on eink, and much faster page turn performance.

The app runs on Windows, macOS, and Linux. The app has a Windows code sign. The app has been in continuous development since 2012 and has nearly 500K total downloads. 

DO NOT FACTORY RESET during/after jailbreak. It will cause problems if you don't do extra steps beforehand. Ask for help if you are thinking about it.

Using Humble Bundle PDF converted to CBZ PNG with Kindle Comic Converter. The Kindle Scribe is a 10" device at 1860x2480 300 PPI. (I am the kcc dev)

* activate bottom menu with a swipe up, not a tap to avoid accidental activations (requires restart of Koreader)

* overlap and lock bottom status progress bar to avoid accidental activations

* disable UI flashes

* sleep screen customizations (show last page read/book cover/book stats/overall koreader stats)

* disable frontlight bottom-left corner tap shortcut to avoid accidental activation of frontlight

* landscape fit to width reading for single pages of manga:

Yes, I accidentally activate a lot of things...

I also use the top/bottom page turn direction so tapping anywhere on the bottom advances forward.

• Fit: full not width
• view mode: page not continuous
• page crop: none not auto if you used KCC to target the exact resolution already
• adjustable contrast
• tap bottom bar to make it fullscreen
• bottom left corner activates frontlight
• bottom right activates progress bar, deactivate for fullscreen
• diagonal short swipe to refresh page
• hold panel to zoom in
• change full refresh frequency from every 6 pages to whatever you want even never
• change page turn tap zones for right to left content
• tap opposite corners to screenshot
• hold a setting to set it as the default
• hold exit button to exit koreader for kindle since you can't usb inside koreader
• dither: off if you used KCC to dither already
• set a custom sleep screen

Are there any other subs that explicitly ban them? https://www.reddit.com/r/kindle/comments/1uu1e9b/removed_by_moderator/

View mode: page instead of continuous so you see one page at a time.

Page crop: none instead of auto, crop in kcc because additional resizing after KCC output will blur since it was already targeted to your exact device resolution.

dithering: off, dither in kcc by using png option to save battery.

Open Dictionary is back after being removed in 5.18.6

Moral: Amazon is willing to restore features they removed as far back as 5.18.6
Filing official complaints via Kindle settings Help Contact Us Email seems to be working.

No side loaded mobi/azw3 manga fixes
Virtual panel option has been removed from the Aa layout menu (first page) since 5.19.2 for mobi/azw3 mangas
Virtual panel used to become an option if the book doesn’t have explicitly defined Region Magnification metadata for every panel
% read tracker works but doesn’t reach the final “read” state after 100%
Full refresh doesn’t work either

Unless Amazon releases Apple silicon native versions of the apps. They've had since 2020 to do it and they still haven't.

If you use those apps, maybe consider using the Feedback form directly in the apps. Native versions of the apps would probably run twice as fast.

Or emailing Amazon directly via Kindle settings > Help > Contact Us > email. For US users this takes you to amazon.com/kindle-help

macOS 27 will be the final macOS with Rosetta for Intel apps so you might want to stay on that version as long as possible.

Also, don't forget to complain to Amazon for any current firmware bugs you have like missing virtual panel mode, full refresh, % read bugs!

Kindle settings > Help > contact us > email.

For US users this takes you to https://www.amazon.com/kindle-help

Also, consider complaining that Kindle Previewer and Kindle Create and kindlegen are intel apps and will stop working in macOS 28. Amazon needs to make native Apple silicon versions.

• EPUB input support and various related bug fixes like fusion
• macOS 27 optimizations
• add 1 page centered landscape option
• scribe landscape profiles
• fix various cropping bugs with black borders
• Add invert direction option (spread splitting is RTL but reading is LTR)
• Vertical 4 panel mode for 4-koma manga
• EPUB language setting instead of just en-US
• EBOK option
• Re-arranged GUI into 4 columns
• removed unnecessary file copies so KCC is faster
• support light novels! optimize just images with the kcc engine and preserve text in your normal epubs!