How to Downgrade WoW Client

[biglad]

1. First Go Open Up your Start Menu

2. Go To My Computer

3. Open The Local Disk

4. Open the Program Files folder

5. Find Your World Of Warcraft folder (this is what people call the wow directory) and open it

6. Now Open Up the Data folder

7. Delete the patch.MPQ file and the patch-2.MPQ

8. Go Back To Your Wow Directory and Now Run The Repair Program

9. Choose Reset And Check Files (it should say wow is damaged,something like that)

10. Let it Repair

11. patch up to version 3.3.5a ( 3.3.5.12340 ) or 4.0.6a (4.0.6.13623)
If you need the patches you can read how to download them here:
http://forum.mgagames.co.uk/showthread.php?t=30134

12. update realmlist file (login.mgawow.co.uk)
Read how to do this here:
http://forum.mgagames.co.uk/showthread.php?t=30142

13. login and play

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For OS X users do the same thing but just look for the "World of Warcraft Repair" App in your World of Warcraft folder. Only for Cataclysm though. There is no Wrath OS X repair.

[the8thark]

Biglad's advice works for the Windows users.
But for OS X users there is no repair application. I've looked everywhere. So you just have to start from scratch again if you want to downgrade your patch.

[sorband]

Ok I updated Biglad's post because i've seen lots of people asking for advice on how to downgrade. This is how you do it folks !

[Allister]

I didn't know that this post was here.Thanks Big and GM crew. I could think of a few times that I could of used this lol

[the8thark]

Edited and added in the following info:
4.0.6a and 3.3.5a info.
OS X info.