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Old 03-26-2026, 07:48 AM   #1
JSWolf
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Patches for Firmware 4.38.23648 Version 2

Firmware 4.38.23648 is for the Libra 2.

This thread is for the patches for the new firmware 4.38.23648. 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 of the 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 4.38.23648.

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.

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_4.38.23648_v2.zip (19.19 MB, 3 views)

Last edited by JSWolf; Yesterday at 10:48 AM.
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Old 03-26-2026, 07:48 AM   #2
JSWolf
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Patches that are known to not work will be posted here.

The following patches do not work
  • Both page turn buttons go next
  • Customize ComfortLight settings
  • Remove PDF map widget shown during panning

If any others do not work, please post about them.
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Old 03-26-2026, 05:52 PM   #3
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You can use the following code to make patch Remove forgot pin button from lock screen (nickel.yaml) work in fw 4.38.23648:
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: 0x19ADBB4 # qss/PinCodeInputDialog.qss
  #- BaseAddress: 0x19C11ED # qss/ParentalControlPinCodeVerifyView.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 03-26-2026, 06:41 PM   #4
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Thank You. I'll get to it tomorrow when I have the time.
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Old Yesterday, 10:49 AM   #5
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Quote:
Originally Posted by jackie_w View Post
You can use the following code to make patch Remove forgot pin button from lock screen (nickel.yaml) work in fw 4.38.23648:
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: 0x19ADBB4 # qss/PinCodeInputDialog.qss
  #- BaseAddress: 0x19C11ED # qss/ParentalControlPinCodeVerifyView.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.
Remove forgot pin button from lock screen has now been replaced and version 2 has been posted. Thanks much!
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