SB06 It's been a while since I did this, so I followed the instructions and the same happened for me. So I did the following:
- power off phone completely
- push power and volume down at the same time until you feel a vibration and the bootloader interface comes up
- use volume buttons to select "recovery mode" and use the lock/power button to enter recovery mode
- (ignore the prompt about the alternate OS and allow it to boot to recovery)
- you'll see the Android, then hold power, then push volume up for the menu to come up
- use volume buttons to select "Wipe data/factory reset" and use the lock/power button to select
I don't remember what comes after that. I don't actually want to reset my phone, so I didn't go past that last step, but I think it should be easy to go from there. Wipe and then restart and you should be good to go.