I tired installing the 2.2 update, but as many of us have seen problems have been occuring. I updated my sisters radio to the version that changed the start up screen. I didn't root the phone or apply any other update except for that one. Obviously I need to downgrade what I did to the stock. I downloaded SDK and will attempt to follow this: The reason I ask is because my cousin did the samething, but is having problems downgrading the phone. The video seems simple enough, but after hearing my cousins unsuccessful attempt I'm worried about doing this. Basically I need some help so that I can downgrade and then upgrade this phone as smooth and fast as possible. Since it is my sisters phone the last thing I need is to give her back a brick. Is there anything else I need to download so I don't fall victim like my cousin did?