Ok since I upgraded to the 2.1 myphone has been having major problems almost to the point where I cant use it anymore. I have done a factory reset 3 times and still hasnt fixed the problems. I did do the upgrade over the air, what I need to know is, is there anyway I can downgrade back to the 1.5 or manually re upload the 2.1 version to see if it fixes my problems. Thank you.