i have nexus S and it is with android 4.1.2 in lock state..
i need to degrade my android OS to 4.0.0 ICS or GB .
i Have all tools for that however my phone is not detected in fast boot.
i used lots of driver for the same form internet but not working ...i have attach my device manager photo.
my PC is with Win Xp SP3
help me on this.