Look in the Titan forum for "Titan Flashing for Dummies - a very basic guide"...
Use Search before you take up space with posts that are useless. Not Nothing personal but come on you couldn't find anyone already discussing this? Here is the LAZY link found for you.
http://forum.ppcgeeks.com/showthread.php?t=9927
And here are people trying to come back from to stock from the 3.16. test rom
http://forum.ppcgeeks.com/showthread.php?t=17111
P.S. Welcome to the site SEARCH first lots of info here if you look for it.