Instructions for patching firmware 4.28.17925

[geek1011]

This patch thread is for firmware 4.28.17925 (1eb6a2a5d70e9492fc11a1c030c092e127773c63):

Instructions for patching on Windows, Linux, or macOS with kobopatch:

1. Download the Kobo firmware release
   You can find the download links here here.
2. Download and extract the patch zip
   Download and unzip kobopatch_4.28.17925.zip from here.
3. Copy the firmware file to the src folder
   Copy the original firmware you just downloaded into the kobopatch src folder.
4. Install the firmware if needed
   Install the firmware on your kobo BEFORE proceeding with the next steps. You can do this by extracting the contents of the firmware zip into the .kobo folder and ejecting.
5. Choose your patches from the files in the src folder
   Enable patches in the files in the src folder (or use the overrides in kobopatch.yaml to keep your options separate).
6. Run kobopatch
   Double-click kobopatch.bat on Windows, or run ./kobopatch.sh on Linux or macOS. On macOS, you can drag it into the terminal and press enter (you may need to go to System Preferences - Security and Privacy - General to confirm that you actually want to run it).
7. Install the patches by copying KoboRoot.tgz into the .kobo folder of your device
   If the patching succeeded, a file named KoboRoot.tgz will be created in the out folder. Copy it to the .kobo folder of your device. Safely remove your device once you are finished. On Linux, you may have to press Ctrl+H to show the .kobo folder.

Download

[geek1011]

Changes to the kobopatch zip:
v71 (2021-07-19): Initial release for 4.28.17623 - 4.28.17925.

Missing patches:
- None!

New patches in this version:
- jackie_w: KePub stylesheet additions - text justify
- jackie_w: KePub stylesheet additions - optimizeSpeed

Rewritten patches in this version:
- geek1011: ePub uniform font scale

Removed patches in this version:
- GeoffR: KePub stylesheet additions

[geek1011]

reserved

[jackie_w]

All patches mentioned in this post can be found in libnickel.so.1.0.0.yaml

Old patch KePub stylesheet additions stopped working in fw 4.28.xxxx. It has been replaced with 2 new patches. You cannot have both of them enabled at the same time.

• KePub stylesheet additions - text justify
  This one should be enabled if you used to use the old patch with option Example 1: Make full justification the default enabled.
• KePub stylesheet additions - optimizeSpeed
  This one should be enabled if you used to use the old patch with option Example 2: text-rendering:optimizeSpeed enabled.

For the remaining 2 options from the old patch:

• Example 4: Make KePub font sizes match ePub font sizes
  Enable patch ePub uniform font scale instead. This has been a better way of doing it for a long time.
  
  Additionally, anyone who prefers to have their [Aa] font-size slider set further to the left to achieve their perfect visual font-size in both epub/kepub can also enable patch Set font scale factor. This second patch is purely optional.
  
  
• Example 3: text-rendering:optimizeLegibility
  We don't know how many people used this option. Unfortunately there was no way to create a new patch which would work equally well for all users.
  
  I do have a beta patch which should be OK for anyone who never reads in a language which reads vertically rather than horizontally. Because it's not one-size-fits-all, it isn't included in the standard kobopatch pack. If this option was important to you, please respond in this thread.