GI-Hdiff Patcher: a tool for manually updating Genshin Impact properly

If you update the game by simply copying all the update files and then replacing them in the game client directory, that's actually not the correct way. You should merge the .pck.hdiff update with the old .pck file and delete the obsolete files listed in deletefiles.txt.

How to use?

For example, you want to update the game from 5.2.0 to 5.3.0:

1. Place the following files in the same folder as GenshinImpact.exe:

   • hpatchz.exe
   • 7z.exe
   • Start.bat
   • Cleanup_5.2.0-5.3.0.txt
   • AudioPatch_Common_5.2.0-5.3.0.txt
   • AudioPatch_English_5.2.0-5.3.0.txt
   • AudioPatch_Japanese_5.2.0-5.3.0.txt
   • AudioPatch_Chinese_5.2.0-5.3.0.txt
   • AudioPatch_Korean_5.2.0-5.3.0.txt
   • game_5.2.0-5.3.0_hdiff.zip
   • audio_en-us_5.2.0-5.3.0_hdiff.zip

2. Run Start.bat and wait until the process finishes.

3. Now, your game is updated!

Note

• Update version 1.0.0 - 1.4.0

  • From version 1.0.0 to 1.4.0, the game updates include voice audio packs for all languages.

• Update version 1.5.0 - 2.4.0

  • Starting from version 1.4 to 1.5, they separated game updates from voice audio pack updates.

• Update version 2.5.0 & 2.6.0

  • From version 2.4 to 2.5, and 2.5 to 2.6, they started using hdiff for game updates. Audio voice packs still used the old update method (non-hdiff).

• Update version 2.7.0 - current version

  • Starting from version 2.6 to 2.7 until the current version, they switched to using hdiff for both game updates and audio voice packs.

• The overview of merging process:

  Banks0.pck (59.5 MB)        // before update
  + Banks0.pck.hdiff (3.0 MB) // hdiff update
  -----------------------------
  = Banks0.pck (62.5 MB)      // new size after update