4 ms·That was also the case with the GM release, so this may be normal.by ComSubVie 16y agoThat was also the case with the GM release, so this may be normal.amichail 16y agoHow much time does it take?ComSubVie 16y agoI can't remember exactly, but the whole upgrade process (including backup) needed somewhere between half an hour and an hour (on my 3G).kxs 16y agoMy update took about 45min (3G). But I don't have that much data on it, only ~4gigs.