Try this post
http://www.blackberryforums.com/gene...-jl_cmder.html
Also be sure you back everything up first. You also need the latest desktop manager.
I would read the posts on the Storm to see what the latest levels are. Another thing that is important, very important!!!!. I dont know what will happen to an unlocked BB with an OS not intended for it so stay within the proper OS for the Storm