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Old 12-10-2025, 08:19 AM   #1
JSWolf
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Unofficial Patches for 4.38.23552

This thread is for the unofficial patches for the new firmware 4.38.23552. 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.

P.S. 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.
Attached Files
File Type: zip kobopatch_4.38.23552.zip (19.19 MB, 40 views)

Last edited by JSWolf; 12-11-2025 at 05:49 AM.
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Old 12-10-2025, 08:21 AM   #2
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Patches that are known to not work will be posted here.

The following patches do not work
  • No patches are known to not apply. But I['ve not applied all of them to test.

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

Last edited by JSWolf; 12-10-2025 at 03:13 PM.
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Old 12-10-2025, 08:22 AM   #3
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Last edited by JSWolf; 12-10-2025 at 08:39 AM.
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Old 12-10-2025, 11:06 AM   #4
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Please see this post for the "official" nickel.yaml file for both firmwares 4.38.23552 and 4.38.23555.

From a kobopatch *.yaml files (nickel, libnickel.so.1.0.0 etc) point-of-view 4.38.23552 and 4.38.23555 can be considered the same. I believe any patch which works in one should work in the other without alteration.
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Old 12-10-2025, 12:11 PM   #5
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@JSWolf, I've only just noticed, the thread title is wrong. It should be Unofficial Patches for 4.38.23552
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Old 12-10-2025, 02:04 PM   #6
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Quote:
Originally Posted by jackie_w View Post
Unofficial Patches for 4.38.23552
It's better to make one theme:
Unofficial patches for 4.38.23552/4.38.23555
Don't multiply entities without necessity.

Last edited by Semwize; 12-10-2025 at 02:07 PM.
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Old 12-10-2025, 03:04 PM   #7
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Quote:
Originally Posted by jackie_w View Post
@JSWolf, I've only just noticed, the thread title is wrong. It should be Unofficial Patches for 4.38.23552
I did report the problem and so far, no fix.
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Old 12-11-2025, 12:35 AM   #8
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Quote:
Originally Posted by JSWolf View Post
Patches that are known to not work will be posted here.

If any patches do not work, please post about them.
The following patches do not work
  • "Customize ComfortLight settings" in libnickel (Clara 2E)

Spoiler:
Code:
         |   Patch("Customize ComfortLight settings") enabled=true
          |     ResetBaseAddress()
          |     applying
          |     looping over instructions
          |       kobopatch.BaseAddress index=3 line=1327
          |         BaseAddress(kobopatch.BaseAddress{Offset:(*int32)(0xc0008614d8), Sym:(*string)(nil), SymPLT:(*string)(nil), SymPLTTail:(*string)(nil), Inline:true, Rel:(*int32)(nil)})
          |           BaseAddress(15277428)
          |       kobopatch.ReplaceInt index=4 line=1331
          |         ReplaceInt(22, 0x15, 0x11)
          |         could not apply patch "Customize ComfortLight settings": line 1331: inst 4: ReplaceInt: could not find specified bytes at offset
        --> could not apply patch "Customize ComfortLight settings": line 1331: inst 4: ReplaceInt: could not find specified bytes at offset
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Old 12-11-2025, 01:05 AM   #9
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Quote:
Originally Posted by hatuluang View Post
The following patches do not work
[*]"Customize ComfortLight settings" in libnickel (Clara 2E)
Seriously?

Last edited by Semwize; 12-11-2025 at 07:34 AM.
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Old 12-11-2025, 01:40 AM   #10
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[QUOTE=Semwize;4553280]Seriously?

The base address:
- BaseAddress: 0xE91D74 # find the base of the unnamed subroutine with the x-ref to _ZN5QTimeC1Eiiii (old BaseAddress: 0xE82E2C)
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Old 12-11-2025, 01:50 AM   #11
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Originally Posted by hatuluang View Post
0xE91D74
https://www.mobileread.com/forums/sh...5&postcount=57
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Old 12-11-2025, 05:50 AM   #12
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Customize ComfortLight settings has been fixed.

Thank you @Semwize.
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Old 12-11-2025, 06:03 AM   #13
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Quote:
Originally Posted by JSWolf View Post
Customize ComfortLight settings has been fixed.
Jon
I checked your archive before I got surprised and wrote here: there was a correct offset value.
Then I don't understand anything, where did the old offset come from...
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Old 12-11-2025, 06:43 AM   #14
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Quote:
Originally Posted by Semwize View Post
Jon
I checked your archive before I got surprised and wrote here: there was a correct offset value.
Then I don't understand anything, where did the old offset come from...
The problem was that the 4.38.23555 had the correct offset and the 4.38.23552 had the old offset. But it's fixed now. With all these different firmware versions, I get I just let this fix out.
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Old 12-11-2025, 07:23 AM   #15
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thanks, it work now.
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