Been trying to find a definitive answer for this question but to no avail. So hopefully somewhere here can help me out. Here's my situation - bought a white iphone 4 on stock 4.3.3. I would like to restore it and set it up as a new phone (to remove any remnants of the seller's info off the phone and I'm experiencing some battery issues that I want to see if setting it up as new will fix it) but also preserve 4.3.3 stock. Can I safely do this on itunes or should I use the phone's erase all content and settings button? I'd like to preserve 4.3.3 so that if I decide to jailbreak it will be untethered. Will I be forced to restore AND update to 5.0.1? If so, any way around this? Thanks everyone!