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Old 03-09-2026, 02:59 PM   #1
JSWolf
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Patches for Firmware 4.45.23646 Version 2

4.4523646 is for the Libra Colour, Clara BW, and Clara Colour.

This thread is for the patches for the new firmware 4.45.23640. Most of the patches work. It may work for later firmware. I cannot say as I've not tried.

All of the patchers have been updated thanks to @geek1011

I would like to thank @aardvark for the original updated Windows .exe, geek1011 for fixing all of patchers and @jackie-w and @Semwize for help in updating some patches.

Use the file kobopatch.yaml to override the no to yes for each patch you want to apply. I cannot say all the patches work. Most of them do apply. If you have any issue with any of the patches, just post about the issue.

This is the same format as the unofficial patches for 4.38.23171.

There are more patchers if you need a different one not in the ZIP file. Please go to https://github.com/pgaskin/kobopatch...es/tag/v0.16.0 to see if what you need is there if it's not in the ZIP file.

Thank you to @jackie_w for fixing even more patches.
Quote:
Originally Posted by jackie_w View Post
This is the "official" nickel.yaml file for both firmwares 4.38.23552 and 4.38.23555

Please note:
Old patch name Increase size of kepub chapter progress chart
has been updated to Increase size of kepub/audio chapter progress chart so that:
  • chapter progress barcharts for both kepub and audiobooks can be similarly enlarged. Users who never read audiobooks can still use the new one without issue.
  • this patch is no longer reliant on a constantly-changing BaseAddress hex offset so should survive further firmware upgrades without needing to be updated every time.
The update nickel.yaml is now included in the ZIP for the patches.

P.S. Thanks to @jackie_w, nickel.yaml has been updated and fixes some patches that previously did not work as well as jackie_w Screensaver full in the custom yaml and Remove forgot pin button from lock screen.
Attached Files
File Type: zip kobopatch_4.45.23646_v2.zip (19.19 MB, 57 views)

Last edited by JSWolf; 03-10-2026 at 06:01 PM.
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Old 03-09-2026, 02:59 PM   #2
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Patches that are known to not work will be posted here.

The following patches do not work
  • My 24 line spacing values
  • Set KePub hyphenation
  • Both page turn buttons go next
  • Replace adobe page numbers toggle with invert screen
  • Allow rotation on all devices

If any others do not work, please post about them.

Last edited by JSWolf; 03-10-2026 at 01:11 PM.
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Old 03-09-2026, 08:15 PM   #3
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Quote:
Originally Posted by JSWolf View Post
Patches that are known to not work will be posted here.

The following patches do not work
  • Unify font sizes (may no longer be needed)
    ...

If any others do not work, please post about them.
Bad News: As far as I can tell, whatever fix Kobo applied in stock fw 4.45.23640, to automatically unify kepub and epub font-sizes, has been removed in fw 4.45.23646

Good News: The old Unify font sizes patch in libnickel.so.1.0.0.yaml now works again.


You can use this code to make patch Remove forgot pin button from lock screen (nickel.yaml) work in fw 4.45.23646:
Code:
Remove forgot pin button from lock screen:
  - Enabled: no
  - Description: |
      Removes the Forgot PIN -> Sign Out button from the lock screen.
      If this is enabled and you forget your pin, you will need to
      hard reset your Kobo.
  #- BaseAddress: 0x1CD73B3 # qss/ParentalControlPinCodeVerifyView.qss
  - BaseAddress: 0x1CF2E51 # qss/PinCodeInputDialog.qss
  - ReplaceZlib:
      Find: "#lblForgotPin[qApp_deviceIsDragon=true],\n#lblSignOut[qApp_deviceIsDragon=true] {\n  font-size: 26px;\n}"
      Replace: "#lblForgotPin,#lblSignOut{qproperty-visible:false;}"
Please can you make the necessary change in the post #1 .zip? Thanks.
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Old 03-09-2026, 11:52 PM   #4
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Quote:
Originally Posted by JSWolf View Post
Patches that are known to not work will be posted here.

The following patches do not work[LIST][*]Unify font sizes (may no longer be needed)
Trust me. It is needed. Kobo reverted to the old size difference.

Many thanks to jackie_w for finding that the old patch works again!
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Old 03-10-2026, 01:10 PM   #5
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Later today I'll fix the patches and post a new zip file and edit the second post.
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Old 03-10-2026, 02:47 PM   #6
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Quote:
Originally Posted by JSWolf View Post
Later today I'll fix the patches and post a new zip file and edit the second post.
If you are going to keep making changes, could you add some sort of version.
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Old 03-10-2026, 06:03 PM   #7
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Quote:
Originally Posted by John F View Post
If you are going to keep making changes, could you add some sort of version.
The new version of the patches have been released. I've added a version # to the ZIP file and the 1st post. I've also added @jackie_w's new Forgot pin patch.
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Old 03-12-2026, 02:26 PM   #8
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Very many thanks to all involved in producing this, and for making it available to the rest of us.

Last edited by bluepeter; 03-12-2026 at 02:39 PM.
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Old 03-13-2026, 06:35 AM   #9
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My most used patch is 'both page buttons go next.' I am staying on my current firmware until a kind soul can make that one work again.

I do appreciate the work involved and am grateful for any work on patches. I merely wish to blow the trumpet for the value of this, for me at least, much valued patch function and state to that I miss it.

Sent from my SM-S921B using Tapatalk
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Old 03-13-2026, 06:49 AM   #10
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Quote:
Originally Posted by Liesse View Post
My most used patch is 'both page buttons go next.' I am staying on my current firmware until a kind soul can make that one work again.

I do appreciate the work involved and am grateful for any work on patches. I merely wish to blow the trumpet for the value of this, for me at least, much valued patch function and state to that I miss it.

Sent from my SM-S921B using Tapatalk
This is a very good reason to use the touch screen. You can't rely on page turn buttons.
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Old 03-14-2026, 07:21 AM   #11
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I own a Kobo Clara BW P365, so far no patch has ever worked on my model.
I have even downloaded official firmware from Kobo website :kobo-update-4.43.23418 for P365 model
and used kobopatch_4.43.23418 and it still never worked.


My Kobo Libra 2 works just fine with patches.
I don't know if I am the only one who has this issue.
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Old 03-14-2026, 07:43 AM   #12
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By doesn't work could you clarify. Are there errors produced during the generation of the new tgz file, or after the creation of the patched firmware does it have no effect on the device?
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Old 03-14-2026, 04:13 PM   #13
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Quote:
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By doesn't work could you clarify. Are there errors produced during the generation of the new tgz file, or after the creation of the patched firmware does it have no effect on the device?
The patch is not applied at all no matter what options I turned on "yes" ,
I generate the update file in the "out" folder just as normal.

However when I update my Kobo, no matter the patch I apply, it does not take effect.
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Old Yesterday, 12:21 PM   #14
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Hey everyone, I was tinkering today with an open source project that provides a web UI for applying these specific patches and would love some feedback. I've tentatively called it "KoboPatch Web UI".

You can check it out here and the source code is available on GitHub.

If you use Chrome, it can detect your device, which simplifies the process. This way it can also write the `KoboRoot.tgz` straight to your device.

Downloading and patching all happens clientside, so this is very much a static website with no analytics, no tracking, etc -- just something I wanted for myself since I have a couple of Kobo devices and I'd love to have a frictionless way to apply these patches without needing to check download URLs and run the patcher via the command line.

For those interested in the technical details: the website leverages a WASM build of kobopatch and uses the set of patches in the OP. Only supports Kobo Libra Color, Kobo Clara Color and Kobo Clara BW for obvious reasons as this specific version of the patches is the only one I currently include.

I've been able to successfully use this on my own Kobo Clara BW. Also includes a "restore original software" option which may be useful to some.

I'd love to also appropriately credit everyone involved w/ these patches. Is there any definitive list somewhere that I can add to my acknowledgements section or should I just use the original post for that? Thanks!
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