Updated yesterday (bad idea). My phone (Virgin Mobile) is not rooted. After update, when I click on the phone icon or the contacts icon, an error message comes up saying "Unfortunately, Contacts has stopped." I have done factory resets to no avail. After going through the motions with Virgin Mobile, it is sending me a replacement phone. I'd rather not wait. Is there a way for me to rollback to the previous software/firmware? Is the only option to "flash" my phone? Thanks.