Ok. You need to follow the instructions on the first page of this post. They will explain how to correctly install Liberty GB. You will need to be rooted and if you are not yet I suggest searching for Z4root and using that to root your phone. It is no longer available on the market, but a copy can be found by searching the forums or doing a Google search. Read all of the directions carefully before you attempt to do anything to your phone as you could end up stuck and wasting a lot more time than necessary to get this ROM installed. A few minutes may save a few hours. Good luck and enjoy Liberty! It is a great ROM that I enjoyed on my D2 for quite a while.