Call me crazy but I don't want my phone to be jailbroken anymore. My friend talked me into it and basically did the entire process for me. I will admit I never complained and liked some of the features but now I want to vanilla it. The problem is that I am not very tech savvy. My friend jailbroke it and now won't help me unjailbreak it. What are my options? If I hit restore will it ruin my phone? Should I hit "Delete all contents and settings?" I realize I am a noob and probably making most of you cringe by my improper use of technical terms but I just need help. What do you all suggest? Btw, I have a Verizon iPhone 4 with iOS 4 installed. Thanks!