ClockworkMod, or CWM, is a replacement recovery system for Android devices. The stock recovery that comes with your Go to product viewer dialog for this item.
He connected the phone to the PC via USB. The screen was black, but the drivers recognized the device. He put the phone into Download Mode. Holding the Volume Down , Home , and Power buttons simultaneously, he waited for the warning screen, then pressed Volume Up to confirm. The screen turned green with a digging Android icon. Download Cwm Recovery V6.0.4.5 For Galaxy S2 Gt I9 Action