Phone is really slow so I went to clear the cache based on the instructions. I get into the boot menu and select recovery. After about 10 seconds the droid bot shows up with the exclamation on his chest and it will not go any further. 1. Power the device off. 2. press and hold the Volume Up and Volume Down buttons and then press the power button on the right side of the device until a Boot Mode Selection Menu appears. 3. Press Volume Down to highlight Recovery, then press Volume Up. So after step is when the droid shows up. What am I doing wrong?