How can I change the version of Terraria?

[gash]

I have a question, how can I change the version in Terraria Original on Steam?
I have the 1.2.1 as same as you but I want the 1.1.2 for install mods with Tconfig.

Thanks I eagerly await your answers.... if this is the way to say haha
Im spanish..... so if I speak bad you will know why is :D

Thanks bye!!!!!!!!!!!!

[Maplelink64]

I wish peope would answer this too. I really want to get a mod to play with my friend. :c

[Bubbles the Soap Dragon]

Install the Terraria Game Launcher, which you would need to use tConfig regardless, and from there, you can prompt it to install earlier versions of Terraria that will exist alongside your current version. After that is done, use this specific post to install tConfig on the downgraded version.
http://www.terrariaonline.com/threads/game-launcher-3-0.98965/page-10#post-2401024

Please note that you might need to temporarily disable User Account Control in order to install the older version of Terraria because it will otherwise flood your computer with prompts and make the installation extremely slow. Here[windows.microsoft.com] is a set of instructions on how to do that.

[ankh merchant]

the game launcher did not work for me