b.diddy, that is what i did on my phone just a couple days ago, and i thought all was well.... went to make a phone call a little while ago but it would only let me tap 3 #,and then got the' unfortunately....processor 'contacts' (that was was new...), so, i turned it off, removed battery,put it back together..then did the hold volume,homepage,and powerbuttons untill galaxy logo came up ,the screen said..something about..os,ibut the screen you scroll to get to 'clear cache' never appeared. now it's been down loading...i don't know what! i thought about taking the battery out to stop it,i can't get it to stop downloading,tried turning the phone off at the beginning of download, decided to leave it alone and post here.in the top lefthand of the screen,in red, it says 00IN MODE. my contacts are on sims,photos backed up,now what : / ...still downloading...i've been trying to fix this for several days,i actually wanted to re do the process in your post above,because it worked, .well, for 1 day.the process i just did didn't work,last time ;it was just the first thing that came to mind....