MCNostalgia is a tool that takes binary difference patches and applies them to the latest version of Minecraft, essentially reverting it to an older version, without ever distributing any .jar files illegally. Binary difference patches are made by taking the differences between two files, one is the source/old file (in this case the latest version of Minecraft), the other is the output/new file (in this case an older version of Minecraft). To patch the files, MCNostalgia requires Minecraft to be unmodified, that means no imported textures even.

Installation
Windows Users

  • Download the ‘Windows’ version of MCNostalgia and the patches. If you really want to use the python form instead, download the ‘Other’ version and make sure you have python installed.
  • Extract the archive to any folder.
  • Run MCNostalgia, it should enter Configurator mode.
  • Choose which options you would like enabled, if you want it to work with different directories than the default ones, you will have to modify the config yourself. It is recommended that you leave errors and logging enabled. Close MCNostalgia and run it again.

Mac Users

  • Install Python 2.7.X (NOT 3.X.X) if you don’t have it already.
  • Download the ‘Other’ version of MCNostalgia and the patches.
  • Extract the archive to any folder.
  • Run MCNostalgia, if it doesn’t run from a double click, try running it via terminal or a shell script with the command “python MCNostalgia.py”, it should enter Configurator mode.
  • Choose which options you would like enabled, if you want it to work with different directories than the default ones, you will have to modify the config yourself. It is recommended that you leave errors and logging enabled. Close MCNostalgia and run it again.

Linux Users

  • Install Python 2.7.X (NOT 3.X.X) if you don’t have it already.
  • Install bspatch if you don’t have it already, using “sudo apt-get install bsdiff” (or something similar, it differs between flavors)
  • Download the ‘Other’ version of MCNostalgia and the patches.
  • Extract the archive to any folder.
  • Run MCNostalgia, if it doesn’t run from a double click, try running it via terminal or a shell script with the command “python MCNostalgia.py”, it should enter Configurator mode.
  • Choose which options you would like enabled, if you want it to work with different directories than the default ones, you will have to modify the config yourself. It is recommended that you leave errors and logging enabled. Close MCNostalgia and run it again.

Other Users
MCNostalgia also hopefully supports SunOS/Solaris and other Unix systems, to match Minecraft. However, I am in no way positive if python or bspatch supports your OS, nor if this tool will even work. It probably will, so long as python does, but I’m not sure. For the most part, it should follow the Linux instructions.

Usage
Patching – Since so many people are having brainfarts, this is what you use to go back to previous versions.

  • Choose a version in the patches and copy all the ptch files as well as the checksum file into the bin folder where you extracted MCNostalgia to. The files, not the folders.
  • Run MCNostalgia
  • Choose Patcher
  • Play Minecraft!

UnPatching

  • Run MCNostalgia
  • Choose UnPatcher
  • Play Minecraft!

Changing Verbosity Settings

  • Run MCNostalgia
  • Choose Configurator, this will run the Configurator again for you to configure the settings again.

Custom Setup
So you want to have this tool, for example, patch minecraft that’s not in your application data? Well, crack open MCNostalgia.ini and let’s take a peek.
appdata = blahblahblah – This line points to where minecraft.jar, lwjgl.jar, lwjgl_util.jar, and jinput.jar are
bin = blahblahblah – This line points to where the backup and logs will be saved, and where the .ptch files should be
As a reminder, I am not responsible for anything you break by altering these settings.

History
1.0.4  – Fixed issue with people using single quotation marks in folder names.
1.0.3 – Added line telling people where to put their patch files if MCN can’t find them. Added versions to checksums. Added timestamps to logs. Individual patches are now zipped individually, so you no longer have to download five files for one version. Logs are now saved constantly, instead of when program is closed (because that didn’t always work).
1.0.2 – Now catches all errors, rather than just where they were likely. Errors should now print line number as well. Fixed issues with macs. If the back up already exists, it will try to back up again anyways, to ensure it has the files to patch. MCNostalgia will now close after running the Configurator; this is to prevent the issue where the other options stop working after the Configurator is run.
1.0.1 – Improved OS detection. Checksum file is now read when you start patching instead of only when you start up MCNostalgia, so you can hot swap the patches and checksum file while MCNostalgia is running. MCNostalgia no longer quits upon starting if there is no checksum file in the bin folder. Included msvcr90.dll for those of you who don’t have it.
1.0 – Partial rewrite. Fixed issues with macs and linux(hopefully). Added checksums. Got rid of alerts as they were only used in two places. Added exe version for Windows so they don’t have to get python. You will have to redownload patches for this version, as each set of patches now include a checksum file.
0.7 – Minor fixes, patches are in a separate download now so that they may be updated without having to redownload the tool itself
0.6 – Removed two debug prints, added checks for missing ini/ini options
0.5 – Python implemented, more idiot proofing
0.2 – First public release, minor improvements to batch scripts
0.1 – Test release

Credits

  • CyborgDragon: Me, durr.
  • okushama, ZeuX, amh7912, lahwran, GenuineSounds: Testing
  • Notch: For making this game
  • _303: For pushing CyborgDragon to port it to Python for multiplatform support
  • InsanityBringer and lahwran: For getting InDev working!

 

Video Tutorials

Windows

Mac

Linux

Currently looking for somebody to do a video tutorial of using it on linux, from installing bspatch to running it. Both using terminal and not, preferably.

Download Link:

MCNostalgia 1.0.4 – Windows
MCNostalgia 1.0.4 – Other
Beta 1.8.1 Patches – All
Beta 1.8.1 Patches – Individual Downloads
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