I wanted to develop using Titanium 1.5.1. Now when I download Titanium I am having SDK 1.2. and when update to 1.6 which is the only option I get to update, I don't get 1.5.1 SDK.
How can I get SDK 1.5.1.?
Follow the steps on the Appcelerator Continuous Builds site for obtaining and installing legacy builds.
http://wiki.appcelerator.org/display/guides/Continuous+Builds