good day ladies and gents of this forum, could anybody please help me with my upgrade. do i have to back up the phone using nokia pc suite v 7....every time i reached 81% of my back up the cellphone goes dead thus disconnects me from the pc...! do i really have benefits if i upgrade the software of this phone? if not what would i miss by not upgrading? thanks for the help i m looking forward to it sirs and maam!