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K4 This device is not authorised as a test kindle

September 2, 2024, 12:21 pm
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:eek:

I have a few old Kindles, one of which is my main: a Kindle 4. I like the buttons and have even replaced the motherboard.

It is not registered to any Amazon account, as I use KOReader and have multiple Kindles (other's registered to Amazon).

Usually in aeroplane mode, one day I connected it to Wifi. After a few minutes, I got "This device is not authorised as a test Kindle by the developer of this item. Please contact the developer." And then my jailbreak was disabled. I did not attempt registering the Kindle (nor do I plan to, it's old), which some have suggested may cause this error.

It's on the latest firmware for K4, jailbroken and I've used RenameOTAbin and ShutTheBackDoor (BinaryRenamer I tested as non-functional on this K4). So it's not getting any OTA updates. What gives? How can I prevent it losing its jailbreak when connected to WiFi?

There's a couple other people over the years who have had the same issue as me:
I used the same solution they did and reinstalled the jailbreak, but this is quite annoying, as it means I can't wirelessly transfer books. Is it because the K4 jailbreak uses revoked dev certs or something? Is there anything I can do to prevent this from happening?
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K4 MailPush - how to email books to Kindle in 2024?

September 2, 2024, 12:29 pm
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I recently discovered MailPush (Chinese Github, my English fork), which seems to offer a more decentralised way for me to email myself docs, my Mum devotional lessons, etc. without logging in to Amazon or depending on them to convert my docs to Amazon formats. I use KOReader, so would rather keep them as docx.

Though it sounds amazing, I have had absolutely no luck getting it to work. All menu options give me "/tmp/klauncher_background-803463509291224482.sh: line 2: mailpush.sh: not found", as tested on 2 different Kindles, my own K4 and a friend's Kindle Basic 3 I was setting up.

Can anyone advise on how to get this tool working? Any help would be greatly appreciated. Most of the other tools by Guo Yong Zhi work perfectly as far as I can tell; his Filebrowser for Kindle is amazing, and the menu entries seem to be fairly standard...:book2:
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Kindle UI Button press Display refresh

September 5, 2024, 3:43 am
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Hello,

i have much fun developing my own Kindle application, but unfortunately i have a few problems a can´t get to solve. Mainly because i am an electronics engineer and no programmer but i try my best to learn.

I use a Kindle Paperwhite 6. Generation with Firmware 5.12.2.2 and jailbreak (i have also KUAL and USBnet installed).
If i am correct my Kindle only comes with GTK2.0?
I am trying to build my own C Program with GTK2.0.

The Program should make a websocket connection to my websocket server and send json-strings to the websocket server (this part works)

I wand to build a UI for it, like a combination lock, have buttons with the numbers 0 to 9 and one "ok" button. If i have the correct Code the json strings gets send to the websocket server. All of this works, but my problem is the screen: when i press one number and then the next number, the first number button gets black again. i can´t get it to work. I searched this forum, ask ChatGPT and looked at other examples, like gtktetris or kterm but i can´t figure out what my mistake is. Please point me at the right direction :)

Also how can i get my ui to go fullscreen and not show the "status bar" at the top (with battery and time).

Thank you very much for your help and if i miss something please point it out to me.

Cyber47
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PW5 Is jailbreak pointless this days? Librariansync not working

September 17, 2024, 7:37 am
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Hey,

I jailbroken my PW5 as soon as jailbreak dropped (around 2 years ago) to use tweaks like librariansync or screensaverhack as these two were my biggest pain in the ass. I was really disappointed to see that none of them works and 99% of tweaks are not updated for PW5...

Whats the point of the jailbreak then? What I can do with my jailbroken PW5? Starting to think about getting back to OEM soft...

Thanks in advance for any help and suggestions!
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Auto launch KUAL extensions on wake up?

September 19, 2024, 12:47 am
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Hey,

im on PW4 with languagebreak with KUAL+ and Helper+

Ive disabled the Screensaver and Im using SkipStone to display data from a website.

SkipStone is running from 1-12h then I put the Kindle to Sleep by holding the power btn for a couple of seconds then I press SCREEN OFF

If I turn the screen on (wake the kindle up) 1h later it starts direct in Skipstone, but if I wait for 10h then it wake it up im at the home screen.

Ïs it possible to boot SkipStone directly on wake up?
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Need some help unbricking my Kindle paperwhite 3

September 23, 2024, 11:53 am
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Hello, I need some help unbricking my Kindle paperwhite. I tried to flash android using this "https://xdaforums.com/t/guide-installing-android-on-your-aging-kindle-e-reader.4450117" guide and seems to have done something wrong. The device now stuck at the logo, no screen refreshing and I can access fastboot. Is there something I can do in this case ?
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PW Top row of PW1 not readable, would like to add a row worth of margin to the top.

September 24, 2024, 2:58 am
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My top row is messed up (I inherited this kindle PW1 not sure how it got damaged). This is what it looks like. Id like to move down the top row so that I can read on it, bonus points if I can move the top bar/menus down too so that I can actually see the battery state/clock etc...

Pictures: https://imgur.com/a/s90OpRG

Ive been following the directions on various threads here, jailbroke it, got netUSB working, but am failing to understand the meaning of numbers in examples given here https://www.mobileread.com/forums/sh...postcount=1795

I tried to go overboard to see a difference and then finetune it, but doubling the numbers here did not seem to do anything:

Default:
Code:
ldc_w "reader.content.topMargin"
aastore
dup
iconst_1
new java/lang/Integer
dup
bipush 30
invokespecial java/lang/Integer/<init>(I)V
aastore
aastore
dup
bipush 41
iconst_2
anewarray java/lang/Object
iconst_1
dup
pop2
dup
iconst_0
ldc_w "reader.content.topMarginOffset"
aastore
dup
iconst_1
new java/lang/Integer
dup
bipush 10
invokespecial java/lang/Integer/<init>(I)V
aastore
aastore
dup
bipush 42
iconst_2
anewarray java/lang/Object
iconst_1
dup
pop2
dup
iconst_0
Changed:
Code:
ldc_w "reader.content.topMargin"
aastore
dup
iconst_1
new java/lang/Integer
dup
bipush 40
invokespecial java/lang/Integer/<init>(I)V
aastore
aastore
dup
bipush 80
iconst_2
anewarray java/lang/Object
iconst_1
dup
pop2
dup
iconst_0
ldc_w "reader.content.topMarginOffset"
aastore
dup
iconst_1
new java/lang/Integer
dup
bipush 12
invokespecial java/lang/Integer/<init>(I)V
aastore
aastore
dup
bipush 42
iconst_2
anewarray java/lang/Object
iconst_1
dup
pop2
dup
iconst_0
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FW 5.16.21 creates crash logs every now and then

September 26, 2024, 10:08 pm
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I recently got my JB'ed Kindle Scrive updated to 5.16.21 (because I just forgot to block OTA).

During usage, it creates crash logs files in documents folder and well as /mnt/us/ ("root" when connected via USB).

In documents they are like:
cmd_10725_037-juno_16021_barolo_bellatrix3-428978_crash_Sep_25_21.52.22_2024.sdr
cmd_10725_037-juno_16021_barolo_bellatrix3-428978_crash_Sep_25_21.52.22_2024.txt
cmd_15905_037-juno_16021_barolo_bellatrix3-428978_crash_Sep_26_23.12.36_2024.tgz

or similar, but for powerd.

In /mnt/us/ they have similar names, but archives are about 30 MB:
cmd_15905_037-juno_16021_barolo_bellatrix3-428978.core
Indexer_Dump_1727406757193.txt
powerd_3586_037-juno_16021_barolo_bellatrix3-428978.core

I don't know might be causing it.

Does anybody experience the same?
@Marek

Maybe Kindle is complaining because I have logging, OTA, and minerva blocked :D
But this wasn't the case on 5.16.9 or 5.16.3.
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Jailbreak on 5.14.3.0.1 Firmware

September 28, 2024, 9:35 am
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Hi all,
I'm using 5.14.3.0.1 on KT4. Which jailbreak should I use? And do I need to update to some specific firmware version before jailbreak?
Thanks in advance.
:help:
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PW5 Lost the installed koreader on pw5

October 1, 2024, 2:32 pm
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i installed koreader some months back when i on pw5 but yesterday when i exited the koreader and came back to see the kual entry missing from the library section.
Have i lost the koreader installation. Do i need to follow the installation process from start to get it back. Please help. Thanks
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5.16.21 KPW Signature (JB+Hotfix) - KOReader + KUAL auto-removed from /documents

October 1, 2024, 8:33 pm
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Just a warning:

I have a jailbroken Kindle Paperwhite Signature (11th gen) 32GB that I updated to 5.16.21. Following directions here (https://fw.notmarek.com/khf/ - at my own risk, I know!) to update to 5.16.21, and then installing HF hotfix, HF MRPI, KUAL, KOReader, and KOL asap booklet, and installing/applying coversetter and BinaryRenamer, I decided to connect to WiFi and register with Amazon. Discovered that Amazon has ability (whether through registration, or through latest firmware) to go into my /documents folder, and remove the KUAL.kual and KOReader.kol files (making KUAL and KOReader inaccessible from my Kindle PW's GUI). My fix was to reinstall everything (starting with hotfix).

I was able to replicate this issue (and fix) with my Kindle Oasis 3 (10th).

I tried downgrading to do a clean install of 5.16.2 using instructions on this site and the RUNME.sh script, and got an error during the update process (UPDATE ERROR: 11).

Not cool, Amazon (who owns this device, and the documents in the /documents folder, btw?)!

Questions to the communithy:
1. Is there some additional binary in the .21 FW version that can go into the /documents directory and remove specific files? Or, some other mechanism for Amazon to remove my files in /documents directory?
2. Any thoughts as to workaround to make downgrade possible?

Thanks in advance for any info!
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Kindle Scribe 5.16.21 - How to wipe all Wi-Fi networks

October 4, 2024, 7:47 pm
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Hey guys,

Do you know a way to delete all saved Wi-Fi credentials?
I once accidentally connected to a wrong network in a public place. Kindle remembered it and now tries this network first and fails.

Maybe a lipc command?
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PW2 5.12.2.2 Can't install USBNetwork

October 8, 2024, 9:24 am
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Following the Tutorial Open Sesame! (AKA., The New & Improved JailBreak Index) Using 7-zip on a Win PC to extract the files, I prepared a Paperwhite 2 (6th gen) using the WatchThis jailbreak. I applied the hotfix JailBreak-1.16.N-FW-5.x-hotfix.zip , MR Package Installer kual-mrinstaller-1.7.N-r19303.tar.xz , and then KUAL.

At this point I attempted to load USBNetwork kindle-usbnet-0.22.N-r19297.tar.xz using the 'Install MR Packages' helper and although I briefly saw the name of the package appear in the 'destroy' message, the package hasn't shown up in the KUAL menu.

On closer reading I realised I hadn't installed the coplate version of KUAL so applied the uninstall and then installed from KUAL-f190a38-20240104.tar.xz (my only mis-step AFAIK). This left me with two KUALs in the Library so I deleted the defunct one. But this has made no difference - further attempts to install the USBNetwork package still results in no-show.

I have since loaded other packages OK - e.g. Kterm so it seems strange to not get USBNetwork loaded. Any tips here folks?
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PW2 Dead regulator chip?

October 14, 2024, 7:31 am
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I bought a broken PW2 off ebay thinking it would be an easy fix, just a Repair Code:2 (I was wrong). I lifted the tx pad so I went to the TM800 and TM801 pads, but then the kindle stopped working completely. I was confused as I wasnt getting a serial output either, the screen backlight turned on but nothing. Today I started experimenting again and while having the serial line connected, I checked continuity between TX and ground, and I got some logs from the Kindle! (Of course I got serial working when its broken :smack:)

Here is the log: https://pastebin.com/PKnfKXEM

I see that "max77696-epd max77696-epd.0: EPDINT: Regulator Fault Detected [02]" is getting mentioned, which i'm guessing means a busted voltage regulator.

Is it possible for me to have a go and replace it?
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Is there a way to run a Linux terminal on the Scribe to use a text browser like W3M?

October 16, 2024, 2:55 pm
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11° gen factory new

October 20, 2024, 4:42 pm
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Good evening everyone, I'm new here and it's a pleasure to join :)

First, I'd like to explain my situation: my stepfather is visually impaired and made a deal for a Kindle on an online marketplace

It turns out the Kindle was locked, and he was never able to resell it. It's an 11th-gen model (specs in the image below). Today, he brought it to me, asking if there was anything that could be done since it’s been sitting unused, and if I could fix it, it could be mine :chinscratch:

So, I’d like to ask you all if it’s possible to jailbreak it in this case or if I should contact Amazon and try to ask for help unlocking it.




https://i.imgur.com/JhunmJx.png
https://i.imgur.com/3OQOERb.png
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K2 Stuck Configuring Demo

October 21, 2024, 3:34 pm
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I recently started the jailbreaking process for my Kindle Basic (Model WP63GW), but am stuck entering demo mode. After skipping connecting to the internet and entering dummy store information, I am brought to a screen titled "Configuring Demo". The device remains on this screen until it powers off either on its own or when I tap the power button, at which point it returns to the demo wifi configuration screen. I have tried with and without connecting to wifi as well as holding the power button for a full minute, but am out of ideas besides attempting to reset it by connecting it to my PC. I haven't been able to find anyone with a similar issue online, but I apologize if this thread is redundant. Is anyone aware of a fix or bypass?
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K4 Launch KoReader from the home screen

October 22, 2024, 6:55 am
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I have two K4s, each of which has KoReader installed. I'm not planning to have any other KUAL extensions installed on them, so it'd be nice to be able to launch KoReader directly instead of going through KUAL.

It looks like there are two ways of going about this: KPVBooklet and KOL.

KOL, which I've used successfully on my PW3, is a Booklet, which to my knowledge isn't supported at all by the K4 on 4.x firmware.

Meanwhile, KPVBooklet, despite being deprecated and warning that it only works on old model&firmware combinations, still only lists devices running 5.x firmware as supported.

Is there any way to achieve this on a K4, or am I out of luck? I could also add something to upstart but I'd rather not figure that all out.

Cheers!
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Downgrade a jailbroken kindle from 5.16.21

October 22, 2024, 11:47 pm
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Hi. I have managed to successfully jailbreak my kindle paperwhite 11th gen which was on 5.16.2.1.1 version and installed Kual and KOreader, but it got updated to 5.16.21 overnight as I mistakenly didn’t install ota update block. Kual fails to launch now but as the device is still jailbroken, is there any chance of downgrading it to the previous version of 5.16.2.1.1 to install koreader again?
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Firmware 5.17.1 and HF binaries

October 24, 2024, 9:12 am
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I took the plunge and updated my KO3 from firmware 5.16.2.1.1 to the newly released 5.17.1, and it seems I am not able to get the jailbreak back following Marek's instructions for HF firmwares. I installed the non-HF hotfix and installed the 5.17.1 update, however I am unable to successfully run the HF hotfix to complete the procedure.

I'm not asking for help (I was aware of the risk when I ran the update), I just wanted to give a heads-up to anyone potentially planning on updating their Kindle that the new update might not play nice with their jailbreak for now.

Some more details:
  • Uploading the Update_jailbreak_hotfix_1.16.N_khf_install.bin file to the root of the Kindle does not bring up an "invalid update file" error when ejecting the Kindle, however attempting to install it from the Kindle UI results in an error message saying that a problem occurred and the update failed.
  • Uploading the Update_KUALBooklet_hotfix_f190a38_install.bin file to the root of the Kindle does bring the "invalid update file" error. The other KUAL .bin files (install and uninstall) don't register as update files (no update menu item shows up).
  • Trying to install the hotfix via ;log mrpi doesn't work - MRPI won't start (the Kindle just actually searches for the string in the books). I made sure to have Marek's updated MRPI binaries for HF installed in the extensions folder, but I believe those require a working KUAL.
  • ;log runme also doesn't work, either with the downgrade script or for the emergency-bridge-recovery script.
  • ;711 however does work, so it doesn't seem that all ";" commands were disabled.
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