We have installed Tridion 2011 SP1 HR#2 on the Content Manager Server. We want to rollback the same. Is there a way to achieve it?
Is there any specific reason you want to rollback?
There is no direct way to rollback, you have to do it manually. You either have to install HR1 followed by other CM patches(if you earlier had).
If you have DB backup, then it would be bit little easy.