What is the problem you are having with Multitap? It is a know problem with the letters doubling when trying to get to the second letter. For instanse if you want to type the word "read" you may bet "eead". Personally I hate multitap and only use it for passwords. Suretype is must faster and better.
You can find all the previous OS's in this post: http://www.blackberryforums.com/medi...-4-2-only.html