im selling my iphone tomorrow. im selling it as an jailbroken iphone with cydia and native apps. i want everything to be as if it was a new iphone, but i want it to have no data of anything that i had such as contacts,calendas,sms,photos. whats the best way for me to do this? please state the steps. p.s, summary: i want to erase all personal content, and anything. but still be jailbroken.