Tutorial  Updated

How to unpack and repack Unreal Engine 4 files

Because i couldn't find any tutorial for this, i made my own package. This tutorial doesn't include how to unpack NSP, XCI or NCA. It's for people who already knows that. Use DBI or emulators romfs browser.

This tutorial is made purposely for mount point ../../../ which is default for Switch games. More info in tutorial.
It may look rough, but it's easy to remember after few attempts.
If something is not working, write post.
English purists should run away. It will not be a plausible text. :D

RequirementsCheck version of packageUnpackPack filesCreating patchExceptionsDecryptionThanksTricks & Tips

  1. What you need to download:
    - Package "UnrealPakSwitchv9.zip" from attachments and unpack it.
    - Notepad++ (or any other text editor with Perl regular expressions)
    - Python 2 or 3
    - Unreal Engine 4.19.2 (for v4 *.pak), Unreal Engine 4.20.3 (for v5 *.pak), Unreal Engine 4.21.2 (for v7 *.pak), Unreal Engine 4.22.3 (for v8 *.pak), Unreal Engine 4.24.3 (for v8.23 *.pak), Unreal Engine 4.25.4 (for v9 *.pak), Unreal Engine 4.26.2 (for v11 *.pak), Unreal Engine 4.27.2 (for v11.27 *.pak). For complete pack you need to download eight of them.

    Additional note If you want to extract PAK, download just newest version (Unreal Engine 4.27.2) since UnrealPak unpacking is backwards compatible (only exclusion is that v11 PAKs are not fully supported by v11.27 unrealPak).
    For packing files usually you can use unrealPak version that matches your PAK version or older, so you can use oldest Unreal Engine 4 (4.19.2) to pak your mods and it should work for 99% of cases.
    Remember that's not a rule since developers can change how PAKs are packed or read individually.
    Tutorial is explaining how to extract and make PAKs "properly", though you can skip some parts of it if you know what you are doing.


    My package lacks UnrealPak.exe which is licensed, but free to use. That's why I don't upload them.
    After download each respected Unreal Engine you can find UnrealPak.exe in:
    1. X:\Program Files\Epic Games\UE_4.19\Engine\Binaries\Win64\unrealpak.exe
    2. X:\Program Files\Epic Games\UE_4.20\Engine\Binaries\Win64\unrealpak.exe
    3. X:\Program Files\Epic Games\UE_4.21\Engine\Binaries\Win64\unrealpak.exe
    4. X:\Program Files\Epic Games\UE_4.22\Engine\Binaries\Win64\unrealpak.exe
    5. X:\Program Files\Epic Games\UE_4.24\Engine\Binaries\Win64\unrealpak.exe
    6. X:\Program Files\Epic Games\UE_4.25\Engine\Binaries\Win64\unrealpak.exe
    7. X:\Program Files\Epic Games\UE_4.26\Engine\Binaries\Win64\unrealpak.exe
    8. X:\Program Files\Epic Games\UE_4.27\Engine\Binaries\Win64\unrealpak.exe


    For third point (UE_4.21) you need to copy with unrealpak.exe also DLLs and other (treat UnrealPak.exe and all files below as one if you will follow Exceptions tab):
    Code:
    UnrealPak-BuildSettings.dll
    UnrealPak-Core.dll
    UnrealPak-Json.dll
    UnrealPak-PakFile.dll
    UnrealPak-PakFileUtilities.dll
    UnrealPak-Projects.dll
    UnrealPak.modules

    For fourth point (UE_4.22) you need additional files:
    Code:
    UnrealPak-BuildSettings.dll
    UnrealPak-Core.dll
    UnrealPak-Json.dll
    UnrealPak-PakFile.dll
    UnrealPak-PakFileUtilities.dll
    UnrealPak-Projects.dll
    UnrealPak.modules
    UnrealPak-RSA.dll

    For fifth point (UE_4.24) and sixth point (UE_4.25) you need additional files:
    Code:
    UnrealPak-BuildSettings.dll
    UnrealPak-Core.dll
    UnrealPak-DerivedDataCache.dll
    UnrealPak-Json.dll
    UnrealPak-PakFile.dll
    UnrealPak-PakFileUtilities.dll
    UnrealPak-Projects.dll
    UnrealPak.modules
    UnrealPak-RSA.dll
    UnrealPak-TraceLog.dll


    For seventh point (UE_4.26) you need additional files:
    Code:
    UnrealPak-BuildSettings.dll
    UnrealPak-Core.dll
    UnrealPak-DerivedDataCache.dll
    UnrealPak-Json.dll
    UnrealPak-PakFile.dll
    UnrealPak-PakFileUtilities.dll
    UnrealPak-Projects.dll
    UnrealPak.modules
    UnrealPak-RSA.dll
    UnrealPak-SSL.dll
    UnrealPak-TraceLog.dll

    For eighth point (UE_4.27) you need additional files:
    Code:
    UnrealPak-Analytics.dll
    UnrealPak-BuildSettings.dll
    UnrealPak-Core.dll
    UnrealPak-CoreUObject.dll
    UnrealPak-DerivedDataCache.dll
    UnrealPak-Json.dll
    UnrealPak-PakFile.dll
    UnrealPak-PakFileUtilities.dll
    UnrealPak-Projects.dll
    UnrealPak.modules
    UnrealPak-RSA.dll
    UnrealPak-SSL.dll
    UnrealPak-TraceLog.dll

    For each one version you need to copy UnrealPak.exe to correct folder of my package:
    1. UnrealPakSwitch\v4\2\3\UnrealPak.exe
    2. UnrealPakSwitch\v5\2\3\UnrealPak.exe
    3. UnrealPakSwitch\v7\2\3\UnrealPak.exe (+ other files)
    4. UnrealPakSwitch\v8\2\3\UnrealPak.exe (+ other files)
    5. UnrealPakSwitch\v8.23\2\3\UnrealPak.exe (+ other files)
    6. UnrealPakSwitch\v9\2\3\UnrealPak.exe (+ other files)
    7. UnrealPakSwitch\v11\2\3\UnrealPak.exe (+ other files)
    7. UnrealPakSwitch\v11.27\2\3\UnrealPak.exe (+ other files)

    You can now uninstall Unreal Engine(s) (except if you need Oodle support - read "Oodle decompression" in "Tricks & Tips" before continuing) - there are no more needed

    WARNING!
    UnrealPak for some paks shows error about not detecting some plugin. In most cases it's not needed, just ignore it and it will continue.
  2. Archives are mostly in romfs/******/Content/Paks as *.pak files
    ****** - project name made by devs. It's devs choice (for example Octopath has "Kingship"), but most games have one folder in romfs

    1. Copy *.pak file you want to check to unpacked UnrealPakSwitch folder.
    2. Drag and drop your file to "1. check.cmd"
    It will show
    Code:
    Version: X
    Where X is a version of your package.
  3. If you know what version you have, then drag and drop your *.pak file to
    Code:
    version 4 - "unpack-v4.cmd"
    version 5 - "unpack-v5.cmd"
    version 7 - "unpack-v7.cmd"
    version 8 - "unpack-v8.cmd"
    version 8.23 - "unpack-v8-23.cmd"
    version 9 - "unpack-v9.cmd"
    version 10 - "unpack-v11-27.cmd" (because 10 is unofficial version, we can use as newest tool as possible for Oodle support)
    version 11 or 11.27 - "unpack-v11.cmd" or "unpack-v11-27.cmd" (this is because UE 4.27 made breaking changes to pak files without changing header struct, which makes it impossible to differentiate between 11 and 11.27 from header alone).

    They create "lista.txt" in UnrealPakSwitch folder which contains info about all files. It will be needed for packing archive.
    Don't press key to continue. First open "lista.txt" and check if there is a line
    Code:
    LogPakFile: Display: Mount point ../../../
    If it's correct, press any key to continue. If it's not (something different after Mount point or lack of it), close window and go to Exceptions tab.

    After some time it will unpack all files in most cases to 2 folders:
    - Engine
    - ****** (yes, the same ****** as from previous tab)

    ****** contains assets. Engine should not be modified unless you know what you are doing.
  4. To pack files we need Engine folder unpacked from one of original PAKs. Usually you can find it it any game PAK that is first in alphanumerical order, usually with name starting at "pakchunk0". UnrealPak reads files from this folder before starting reading file list. Not having this folder with correct files will result in error.
    Remember than UnrealPak always creates Engine folder when used if it doesn't exist, so having this folder is not equal to that you have all necessary files.

    First we need to edit lista.txt with Notepad++
    1. Delete those lines (don't worry if one or more lines are missing)
    Code:
    LogPaths: Warning: No paths for game localization data were specifed in the game configuration.
    LogInit: Warning: No paths for engine localization data were specifed in the engine configuration.
    LogPakFile: Display: Using command line for crypto configuration
    LogPakFile: Display: Added 0 entries to add to pak file.
    LogPakFile: Display: Mount point ../../../

    2. Delete last three lines. It will look something like this (quantity of files, size and seconds may differ):
    Code:
    LogPakFile: Display: 103018 files (1944681023 bytes), (1944681023 filtered bytes).
    LogPakFile: Display: Unreal pak executed in 2.605882 seconds
    Third line is empty (CMS of this forum is deleting it, but you can see it in quote mode), you need to delete those three lines.

    3. Run "Find & Replace" (Ctrl+H), Check "Wrap Around" and "Regular Expression"
    Przechwytywanie.PNG
    4.1. For Find what: paste
    Code:
    LogPakFile: Display: "
    Replace with:
    Code:
    "../../../
    Yes - our mount point with quotation mark at the beginning.
    Click Replace All

    4.2. For Find what: paste
    Code:
    " offset: (.*)$
    Replace with:
    Code:
    "
    Click Replace All

    And save.
    Now we have file ready to use for our packing.

    5. Drag and drop "lista.txt" to the same version that original pack was:
    Code:
    version 4 - "pack-v4.cmd"
    version 5 - "pack-v5.cmd"
    version 7 - "pack-v7.cmd"
    version 8 - "pack-v8.cmd"
    version 8.23 - "pack-v8-23.cmd"
    version 9 - "pack-v9.cmd"
    version 10 - "pack-v9.cmd" (because 10 is unofficial version, we need to step down by one version)
    version 11 - "pack-v11.cmd"
    version 11.27 - "pack-v11-27.cmd"

    It will create "newpak.pak" inside UnrealPakSwitch folder. Rename it to name of original *.pak file.
  5. You can create *.pak file that will be treated as patch and doesn't need files that are the same as in original *.pak files.
    1. You need to done "Pack files" tab from beginning to point 4.2, ignore 5th point.
    2. Now you need to delete from lista.txt every line that contains path to not-edited file and save lista.txt.
    3. Drag and drop "lista.txt" to the same version that original *.pak was:
    Code:
    version 4 - "pack-v4.cmd"
    version 5 - "pack-v5.cmd"
    version 7 - "pack-v7.cmd"
    version 8 - "pack-v8.cmd"
    version 8.23 - "pack-v8-23.cmd"
    version 9 - "pack-v9.cmd"
    version 10 - "pack-v9.cmd" (because 10 is unofficial version, we need to step down by one version)
    version 11 - "pack-v11.cmd"
    version 11.27 - "pack-v11-27.cmd"

    It will create "newpak.pak" inside UnrealPakSwitch folder. Rename it to name of original *.pak file, but add at the end of filename
    Code:
    _p
    For example
    Code:
    Kingship-Switch.pak -> Kingship-Switch_p.pak
    And put it to the same folder as was your original *.pak

    Not every game accepts patches in this form. For now i found only Octopath Traveler that crash when you try to put *.pak file without proper name, it needs to be named like this
    Code:
    Kingship-Switch_1_P.pak
    Kingship-Switch_2_P.pak
    etc.
  6. Now we need to consider 2 cases: either just your mount point is different or your pak is encrypted. If in lista.txt there is anything about encryption, go to "Decryption" tab. Else continue in this tab.

    Sometimes mount point can be different and my package needs to be slightly modified if you don't want to make mess. It most cases it means that this *.pak archive is additional to other *.pak file(s) and is "inside" one of them, so after unpacking it will look different than Engine and ****** folders. You can check it in "lista.txt"
    Default mount point is ../../../ which is "3 folders before", that's why i put UnrealPak.exe to such weird combination of folders.
    Mount point is saved in archive properties and if it's not preserved, game will show error.

    For example:

    If it will be version 4 package with mount point ../../King/Sample/:
    1. You need to move UnrealPak.exe from v4\2\3 to v4\2\ (only two folders back)
    2. Change in pack-v4.cmd
    Code:
    v4\2\3\UnrealPak.exe ..\..\..\newpak.pak
    to
    Code:
    v4\2\UnrealPak.exe ..\..\newpak.pak
    and in unpack-v4.cmd
    Code:
    v4\2\3\UnrealPak.exe
    to
    Code:
    v4\2\UnrealPak.exe

    Unpacked folders needs to be moved to
    Code:
    UnrealPakSwitch\King\Sample

    For 4.4 in Pack files tab you will need to change Replace with: to
    Code:
    ../../King/Sample/

    Now you can go back to previous tabs and continue with knowledge that some files are now different, but steps are the same if you take informations from here and change in previous tabs.
  7. In some cases devs decided to encrypt index of pak file and because of that we can't easily unpack all files. Some multiplatform games are using the same key, so if your game has also PC version, try to find key on google (there are sites specializing in extracting keys from PC exes). But there is a method how to get this decryption key from Switch executable. For more go here:
    https://gbatemp.net/threads/how-to-extract-decryption-key-for-unreal-engine-4-pak-files.574916/

    Don't share any keys here in this topic as it is violation of rules.

    If you have key in 32 bytes hex format like this:
    Code:
    1211345678901234432109876543210036363636363636363636363636363621
    We need to convert it to Base64. There are many sites converting hex to Base64, link to used by me:
    https://base64.guru/converter/encode/hex

    So in my case I got
    Code:
    EhE0VniQEjRDIQmHZUMhADY2NjY2NjY2NjY2NjY2NiE=

    Now go to UnrealPakSwitch folder, edit "crypto.json" and replace
    Code:
    DUMMY
    with our Base64 key and save it. This is how it will look in the end

    Code:
    {
      "$types": {
        "UnrealBuildTool.EncryptionAndSigning+CryptoSettings, UnrealBuildTool, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null": "1",
        "UnrealBuildTool.EncryptionAndSigning+EncryptionKey, UnrealBuildTool, Version=4.0.0.0, Culture=neutral, PublicKeyToken=null": "2"
      },
      "$type": "1",
      "EncryptionKey": {
        "$type": "2",
        "Name": null,
        "Guid": null,
        "Key": "EhE0VniQEjRDIQmHZUMhADY2NjY2NjY2NjY2NjY2NiE="
      },
      "SigningKey": null,
      "bEnablePakSigning": false,
      "bEnablePakIndexEncryption": true,
      "bEnablePakIniEncryption": true,
      "bEnablePakUAssetEncryption": false,
      "bEnablePakFullAssetEncryption": false,
      "bDataCryptoRequired": true,
      "SecondaryEncryptionKeys": []
    }

    Go back to "Unpack" tab but instead of using "unpack-*****.cmd" we need to use "unpack-encrypted-*****.cmd".

  8. Thanks to panzi for u4pak.py (that i slightly modified for this package)
    https://github.com/panzi/u4pak
  9. It will be updated with new informations in time.

    ufontuexp, uasset, ubulklocresOodle compressionZSTD compressionOther tutorials

    1. *.ufont file is ttf font with only changed extension.
      If your file is f.e.
      Code:
      Ariadna.ufont
      change name to
      Code:
      Ariadna.ttf
      You can edit it without worry if you don't change config of this font inside font editor.
    2. If asset contains only uexp and uasset:
      *.uexp is archive for data - in default it's not compressed nor encrypted, but it can be cofigured by devs if they want to modify the way how files are packed.
      *.uasset has informations about files inside uexp - their filenames and references - and how big is *.uexp file:
      Code:
      *size in bytes*-4 converted to Hex Little Endian
      f.e.
      1966078-4 = FAFF1D

      If asset contains uexp, uasset and ubulk:
      *.uasset has informations about files inside uexp - their filenames and references - and how big is uexp
      *.uexp is archive for Editor data, it contains data about ubulk size and thumbnail representing asset
      *.ubulk contains raw asset without any additional info

      If you change size of *.uexp file and you don't change value inside *.uasset, game will not load.
      If you want to serialize informations included in them (f.e. stats of equipment), I recommend John Wick Parse. It extracts supported data to json files:
      https://github.com/SirWaddles/JohnWickParse/releases
      and this tool that seems to have better support for blueprints:
      https://gitlab.com/alex4401/uasset-data-extractor
    3. *.locres - localization files. This is default way of saving strings, but it's not often used by devs. They prefer to create their own format and put to *.uexp file (f.e. Octopath Traveler).
    4. Some games may use oodle compression for pak files (v8+ can generate filelist with info about used compression method, if it's not custom).
      Unreal Engine 4.27 version has added Oodle for free, so you can use that to unpack v11.27 PAKs and older than v11 (because of code conflict UnrealPak 4.27 doesn't support v11 PAKs).
      You must go to:
      Code:
      X:\Program Files\Epic Games\UE_4.27\Engine\Plugins\Compression\

      Copy folder "OodleData" to "v11.27" folder in UnrealPakSwitch folder.
      For unpacking v11 you can use QuickBMS
      https://aluigi.altervista.org/quickbms.htm
      With this script
      https://gbatemp.net/threads/unpacking-sao-fatal-bullet-pak.545478/#post-8748129
      You don't need oodle for packing, default compression (zlib) will be readable by game, so you can follow this tutorial for packing files.
    5. Some games may use zstd compression for pak files (v8 can generate filelist with info about used compression method, if it's not custom).
      Unrealpak is then not usable without compiling zstd plugin by yourself. But for unpacking you can use QuickBMS
      https://aluigi.altervista.org/quickbms.htm
      With this script
      https://gbatemp.net/threads/how-to-...al-engine-4-files.531784/page-10#post-9380618
      You don't need zstd for packing, default compression (zlib) will be readable by game, so you can follow this tutorial for packing files.
    6. How to swap audio in Unreal Engine 4 games
      https://gbatemp.net/threads/how-to-swap-audio-in-unreal-engine-4-games.535516/

      Tool for extracting and making textures compatible with Switch
      https://gbatemp.net/threads/noesis-mod-tiling-texture-for-ue4.535571/
 

Attachments

  • UnrealPakSwitchv10.zip
    21.2 KB · Views: 67
Last edited by masagrator,

Imancol

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Yeah, time depends on how fast your CPU is. UE4 games have one of biggest mains from all Nintendo Switch games, so for other UE4 games this is a norm.


Hopefully "petty" wasn't used here in pejorative way. :ph34r:
Good. So far I only have to see how I examine and extract the .uasset and .uexp files

So far I have not had any luck with any tools. Umodel doesn't seem to recognize the audio source, only models, textures, and shaders.

upload_2020-11-23_12-48-36.png
 

destiny123

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LogPakFile: Display: DISABLING pak file index freezing (all must be true: HasPlatformInfo? false - TargetIs64Bit? unknown - NoRuntimeUnloading? true - Unencrypted? true, '' != 'Windows')
LogPakFile: Display: Added 15832 files, 1308472825 bytes total, time 97.72s.
LogPakFile: Display: Compression summary: 40.52% of original size. Compressed Size 962826221 bytes, Original Size 2376014210 bytes.
LogPakFile: Display: Used compression formats (in priority order) 'Zlib, '
LogPakFile: Display: Encryption - DISABLED
LogPakFile: Display: Unreal pak executed in 98.124182 seconds

How to modify the compression format? I don't need Zlib
 

masagrator

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LogPakFile: Display: DISABLING pak file index freezing (all must be true: HasPlatformInfo? false - TargetIs64Bit? unknown - NoRuntimeUnloading? true - Unencrypted? true, '' != 'Windows')
LogPakFile: Display: Added 15832 files, 1308472825 bytes total, time 97.72s.
LogPakFile: Display: Compression summary: 40.52% of original size. Compressed Size 962826221 bytes, Original Size 2376014210 bytes.
LogPakFile: Display: Used compression formats (in priority order) 'Zlib, '
LogPakFile: Display: Encryption - DISABLED
LogPakFile: Display: Unreal pak executed in 98.124182 seconds

How to modify the compression format? I don't need Zlib
Dunno, never was interested because zlib is supported by default in all Switch UE4 games.
 

destiny123

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Sorry, I need help.
The original pak size is 2.3GB,
After I modified and repackaged, the new pak size is 1.3GB, and the game does not work...
 

masagrator

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Well, this is how compression works. If it's not working, then issue lays in different place.

And check what you want to send before sending post.

--------------------- MERGED ---------------------------

I'm not helping with PC. If your pak file size matches size of unpacked assets and you want to get 1:1, then you want to get rid off compression, not change it. And you can do that by removing -compress command from cmd file
 
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destiny123

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Well, this is how compression works. If it's not working, then issue lays in different place.

And check what you want to send before sending post.

--------------------- MERGED ---------------------------

I'm not helping with PC. If your pak file size matches size of unpacked assets and you want to get 1:1, then you want to get rid off compression, not change it. And you can do that by removing -compress command from cmd file
thank you very much
 

destiny123

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C:\Users\ly\Downloads\UnrealPakSwitchv6\UnrealPakSwitch>v9\2\3\UnrealPak.exe ..\..\..\newpak.pak -Create=C:\Users\ly\Downloads\UnrealPakSwitchv6\UnrealPakSwitch\lista.txt -compress
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCrypto' - 0 instances of that module name found.
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCryptoTypes' - 0 instances of that module name found.
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCryptoOpenSSL' - 0 instances of that module name found.


Use v9 to package the pak file, but it prompts abnormal Unable to load module.
What files need to be copied to UnrealPak files?
 

destiny123

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DISABLING pak file index freezing (all must be true: HasPlatformInfo? false - TargetIs64Bit? unknown - NoRuntimeUnloading? true - Unencrypted? true, '' != 'Windows')

Sorry, excuse me, how can I fix this error?
 

Yanda

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I'm trying to unpack BD2 final demo, but I'm getting a lot of errors and 0KB files.
Looking at the log, it seems to be an error related to Zstd compression, is there a solution?

lista.txt
Code:
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCrypto'  - 0 instances of that module name found.
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCryptoOpenSSL'  - 0 instances of that module name found.
LogPakFile: Display: Using command line for crypto configuration
LogPakFile: Display: Mount point ../../../
LogPakFile: Display: "Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" offset: 0, size: 509 bytes, sha1: 46F329D88DCCF1453DB7E1D1F8280D30C1DFA064, compression: Zstd.
LogPakFile: Display: "Engine/Content/Functions/Engine_MaterialFunctions01/Texturing/ScaleUVsByCenter.uasset" offset: 592, size: 606 bytes, sha1: 2401DD79F525A878BE6D8A6F21CCF6ECB1125D02, compression: Zstd.
LogPakFile: Display: "SunriseTrial2-E/Content/Materials/BasicTextures/T_Sky_Blue.uasset" offset: 1280, size: 540 bytes, sha1: 950A40198AA6E13F49B4EF8386FBA0ABC3CE28EC, compression: Zstd.

log
Code:
G:\xci\UE4\UnrealPakSwitch>v8.23\2\3\UnrealPak.exe G:\xci\UE4\UnrealPakSwitch\SunriseTrial2-E-Switch.pak -list  1>lista.txt
G:\xci\UE4\UnrealPakSwitch>v8.23\2\3\UnrealPak.exe G:\xci\UE4\UnrealPakSwitch\SunriseTrial2-E-Switch.pak -extract ..\..\..\
LogPaths: Warning: No paths for game localization data were specifed in the game configuration.
LogPakFile: Display: Using command line for crypto configuration
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (509/880) from address 0000025C34734100 using format Zstd, this may indicate the asset is corrupt!
LogPakFile: Display: Extracted "Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" to "..\..\..\Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" Offset 0.
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (863/1964) from address 0000025C3407E080 using format Zstd, this may indicate the asset is corrupt!
.
.
.
LogPakFile: Display: Extracted "SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M02.usm" to "..\..\..\SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M02.usm" Offset -1599120128.
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (14537/65536) from address 0000025C33E41840 using format Zstd, this may indicate the asset is corrupt!
LogPakFile: Display: Extracted "SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M03.usm" to "..\..\..\SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M03.usm" Offset -1596324448.
LogPakFile: Display: Extracted "SunriseTrial2-E/Plugins/SunriseTrial2-E.upluginmanifest" to "..\..\..\SunriseTrial2-E/Plugins/SunriseTrial2-E.upluginmanifest" Offset -1155952832.
LogPakFile: Display: Unreal pak executed in 212.536874 seconds

bd2err.jpg
 

masagrator

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Code:
Unable to find a module or plugin for compression format Zstd

as it states - it's using zstd, not zlib which is default compression method for UE4 games.
What pak version is this?
 
Last edited by masagrator,

IceLancerSR

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Thanks i finally got things right. Unfortunatelly file is uexp so i cant change texture. My project failed. Love what u have done tho!

--EDIT
OMG
I finally figured out. I made my own project added extracted tng files in assets cooked them with UE and copied my uassets and uexp files and built into empty mod PAK with this tool.
Love you man!

Posted final mod here
https://www.nexusmods.com/seventhedayslonggone/mods/3
Thank you for your tools!

Image is from preliminary test work, not final
sluyvyH.jpg
 
Last edited by IceLancerSR,

Quina

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Can anyone inbox me link download unrealpak.exe , please? That engine so large size I cant install I dont have enough disk space.
 

MrVtR

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I'm trying to unpack BD2 final demo, but I'm getting a lot of errors and 0KB files.
Looking at the log, it seems to be an error related to Zstd compression, is there a solution?

lista.txt
Code:
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCrypto'  - 0 instances of that module name found.
LogModuleManager: Warning: ModuleManager: Unable to load module 'PlatformCryptoOpenSSL'  - 0 instances of that module name found.
LogPakFile: Display: Using command line for crypto configuration
LogPakFile: Display: Mount point ../../../
LogPakFile: Display: "Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" offset: 0, size: 509 bytes, sha1: 46F329D88DCCF1453DB7E1D1F8280D30C1DFA064, compression: Zstd.
LogPakFile: Display: "Engine/Content/Functions/Engine_MaterialFunctions01/Texturing/ScaleUVsByCenter.uasset" offset: 592, size: 606 bytes, sha1: 2401DD79F525A878BE6D8A6F21CCF6ECB1125D02, compression: Zstd.
LogPakFile: Display: "SunriseTrial2-E/Content/Materials/BasicTextures/T_Sky_Blue.uasset" offset: 1280, size: 540 bytes, sha1: 950A40198AA6E13F49B4EF8386FBA0ABC3CE28EC, compression: Zstd.

log
Code:
G:\xci\UE4\UnrealPakSwitch>v8.23\2\3\UnrealPak.exe G:\xci\UE4\UnrealPakSwitch\SunriseTrial2-E-Switch.pak -list  1>lista.txt
G:\xci\UE4\UnrealPakSwitch>v8.23\2\3\UnrealPak.exe G:\xci\UE4\UnrealPakSwitch\SunriseTrial2-E-Switch.pak -extract ..\..\..\
LogPaths: Warning: No paths for game localization data were specifed in the game configuration.
LogPakFile: Display: Using command line for crypto configuration
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (509/880) from address 0000025C34734100 using format Zstd, this may indicate the asset is corrupt!
LogPakFile: Display: Extracted "Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" to "..\..\..\Engine/Content/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat2Components.uasset" Offset 0.
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (863/1964) from address 0000025C3407E080 using format Zstd, this may indicate the asset is corrupt!
.
.
.
LogPakFile: Display: Extracted "SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M02.usm" to "..\..\..\SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M02.usm" Offset -1599120128.
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::GetCompressionFormat - Unable to find a module or plugin for compression format Zstd
LogCompression: Error: FCompression::UncompressMemory - Failed to uncompress memory (14537/65536) from address 0000025C33E41840 using format Zstd, this may indicate the asset is corrupt!
LogPakFile: Display: Extracted "SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M03.usm" to "..\..\..\SunriseTrial2-E/Content/Movies/Maps/MAP_ND5200/MAP_ND5200_M03.usm" Offset -1596324448.
LogPakFile: Display: Extracted "SunriseTrial2-E/Plugins/SunriseTrial2-E.upluginmanifest" to "..\..\..\SunriseTrial2-E/Plugins/SunriseTrial2-E.upluginmanifest" Offset -1155952832.
LogPakFile: Display: Unreal pak executed in 212.536874 seconds

View attachment 239327
Hi,there is an fix to that issue? I think as the compression is different, wouldn't the tool be compatible in this case, right? I have the same error in the BD2 final demo (the first demo worked here to extract the files)
The final demo is an v8.23 like @Yanda said above
 

Yanda

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Hi,there is an fix to that issue? I think as the compression is different, wouldn't the tool be compatible in this case, right? I have the same error in the BD2 final demo (the first demo worked here to extract the files)
The final demo is an v8.23 like @Yanda said above
This tool is working correctly because it only happens on BD2.
If you want to extract it correctly, you have to make it specially. Or ask someone who can write code for quickbms.
I was able to extract it with my tool, but I can't publish it.:(
Here is a note for the archives.
Code:
#baseinfo
magic_offset "e1126f5a" from end to up
version long
start_offset longlong
start_size longlong (not use)
dir_root_length long (not use)
dir_root_name string (not use)
file_length long

#fileinfo file_length loop
name_length long (32bit utf16le, 16bit utf8)
file_offset longlong
zsize longlong
zip long
hash 20
chunks long

#chunks loop (zip = 1)
chunk_offset longlong
chunk_end longlong

ENCRYPTED char (bool)
chunk_size long
 

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