[FIX] Minecraft Version Changer v17.0 - Changes Minecraft Client to Different Versions

Isn't this against the TOC of Minecraft? Or does this check if you got a legit MC?

Hi Afatsum, thanks for your question. Minecraft Version Changer is not distributing working copies of the Minecraft client. Minecraft cannot be played just by downloading MVC - it will only work if a previously installed copy of Minecraft already exists on your computer.

For more info see the FAQ page at http://flippit.ath.cx

@flippit
This isn't a "Bukkit Plugin" - you should move this to here

Moved.

There are many patchers already, I like MCNostalgia.

Version 7.0 of Minecraft Version Changer has been released, with support for Minecraft versions up to Beta 1.6.5

pls integrate 1.6.6

Minecraft version 1.6.6 Beta is now supported with the release of Minecraft Version Changer v8.0

@flippit
A couple of questions:

1. If you have mods installed, are they kept? (I understand that they may not work with the build, but are they deleted?
2. Saves? What happens if you have a save on a later version, and you downgrade.
3. Does it just replace the .jar?

I can see this being VERY useful when I'm testing updating my server
-DanJames

Hello Dan, thanks for your interest!

1. minecraft.jar is the only file changed by MVC - after a version change this will be the originally released version file for the version of Minecraft you have selected. Any modifications you might have made to this file by applying client side mods would be lost, however no other supporting mod files are deleted or modified in any way.

2. MVC was written to assist when using "Multiplayer", in order to overcome problems connecting to Minecraft servers running different Minecraft versions and it does this very well. When it comes to "Singleplayer" there may be a map format issue in some cases, because early versions of Minecraft used a different map saving format. So a map created in a recent version of Minecraft may not be useable when opening it in an early version of Minecraft. I have not done any testing with regards to this. The occasional times I have opened a saved world in a different version there has been no obvious issue. My recommendation is to use MVC to return to the latest version when using "Singleplayer" - I think most users playing "Singleplayer" would want the latest cool Minecraft features and so would want to switch back to the latest version when playing anyway.

3. Yes.

Thanks for your response and clearing that up for me
Yes I will be using this
-DanJames

Hey there flippit. I'm just warning you that you shouldn't give out the Minecraft .jar files. Thee files are copyrighted to Mojang ...

To demonstrate such a thing, one can just go to:
C:\Program Files (x86)\flippit\Minecraft Version Changer

or C:\Program Files\flippit\Minecraft Version Changer

They will instantly have access to the .jars

Thanks 68x for sharing your point of view. Minecraft Version Changer is not distributing working copies of the Minecraft client. Minecraft cannot be played just by downloading MVC - it will only work if a previously installed copy of Minecraft already exists on your computer. Markus Persson (notch) from Mojang has been provided details of MVC and how it operates. This issue is further discussed in the FAQ section on the MVC site at http://flippit.ath.cx.

pwnd

Minecraft version 1.7_01 Beta is now supported with the release of Minecraft Version Changer v9.0

Minecraft version 1.7.2 Beta is now supported with the release of Minecraft Version Changer v10.0

Minecraft version 1.7.3 Beta is now supported with the release of Minecraft Version Changer v11.0

So this is only Windows right?

Hello maetthew,

Yes you are correct, only Windows is supported.

Regards,

flippit

very nice very nice

Thanks great App... the only problem that i have is that i need to re-download the whole program each time, to update, and the only difference is a 1mb jar file. You could just host the jars on a ftp drive and have the application update just by downloading the new jars.

It's a good suggestion Celeixen, one I haven't considered so far. The app package has been slowly increasing in size with each Minecraft update. It's still under 20MB at this stage but I will think about your suggestion as the size of the package will continue to slowly increase as future Minecraft updates are released.

Also i was thinking that you could probably get this to support mods as well, the simple way would to include the mods in the package because each version of MC would require a different mod version. I have a few other ideas if you are insterested

Celeixen,

Any ideas or feedback you have are always welcome. If you would like to, send me your ideas using the email address shown on the MVC website at http://flippit.ath.cx and I would be happy to read them.

flippit.

@flippit
Hey, Dude, I support MC Patch Controllers All the way. But.... This is Indeed Illegal. I am not a jerkface, and I will not report you, but distributing the Minecraft.jar is Illegal. I was able to use it to Launch Minecraft, on a computer that had never ran Minecraft Before. Sorry, but you'll need to find another method of Patching/Unpatching.

Hello JamesShadowman,

I do not believe this is possible, please go to the Minecraft Version Changer website and send details of how this was done to the email address shown for feedback.

The legal issue has been raised before, and I thank you for taking the time to share your concern. This issue has already been addressed in earlier posts in this thread.

flippit

@flippit
It is indeed possible with a Method I came up with. I'm not going to announce it, but it is possible. (Some of the Files Notch Distributes aren't his own.)
If you'd like, I can give you video evidence of how to do it. And it is against the terms of use to Distribute the Minecraft.jar, actually, it is illegal. I read the earlier posts, and MCNostalgia doesn't patch the same way yours does. MCNostalgia simply edits the Binary Text, yours gives you jars.
I'm not going to report you. I just think you should fix it. I'm not against you, there are people who aren't.... mature enough to listen to the other's argument and start spamming hate.
I'll tell you privately how I launched Minecraft from the jar from a Computer that had never ran MC before, if you swear not to tell anyone.
Oh, and by the way, I visited your website.
--EDIT--
Oh, and you told Notch about this? Then, if he has no problem with the Jars being distributed, neither do I! I've heard it's illegal. Just to help protect you from Legal issues, just in case, may I help you come up with a new way that will not just replace your current jar, but edit it?

And also, as another suggestion, make it to where you don't have to install it. I used UniExtract to get the files from the msi.

Suggestion: Make it a Java program so it's a cross-platform program. I'd like to use this but I can't run it on my mac