When i try to use Odin it freezes right after i click start. It unfreezes a couple minutes later but it says "fail". I do not have kies installed either. I need help asap because my lockscreen wont lock and factory reset didnt fix that.
do not use kies for drivers
download install samsung drivers package
try by changing your usb cable
some usb cables will some phones but not with other
connect usb to your computer back port
try reconnecting
and notice :
that after changed usb whether it detected as connected to same port
means com:21 you'l see in odin
if your getting this issue then it might be stronger
if ur talking about lockscreen in s2
*#87976633# will fix it