I fully charged my Iphone 4 around 8am but forgot to take it with me to work, when I got back from work battery is down to 88%. Wifi on 3G off Brightness - 25% Push, Pull - off OpenSSH - off Installed SBsettings Backgrounder Makeitmine. UltraSnow Unlock. Any reason not to upgrade to 4.0.1? if not then do I just hit the upgrade button in Itunes or do I need to put the Phone to DFU then upgrade? I have 4.0 SHSH stored on cydia so won't have problem going back to 4.0.