My N70 was upgraded to non vLive software via the Nokia website, however, it should not do this but should actually update to the latest vLive software if available (which is normally a few versions behind the nokia software).
AS to screwing up the phone, it has buggered up receiving MMS videos on the N70 in that the video displayed is now only a thumbnail image as opposed to full screen. Still do not know why this happens with the Nokia software vs vLive software - irritating..... I have to send my security cams MMS videos to my MTN number to get a proper display.
I might take the N70 to vodacare again to reflush it to the latest vLive software.