I need to return my HTC Evo Shift to the sprint repair place to fix a volume key that isn't working. My phone is rooted, and running v2.3.3 Every single link I've found to download the RUU needed to unroot and return to stock (so Sprint won't void my warranty) leads to dead links. Can someone who has the valid files upload them somewhere and provide a valid download link to them? All the links in the rooting tutorials are dead. Thanks!!!