Here's what I found:
Step one: Power off device
Step two: Press the up button (next press the home button) finally press the power button so now all 3 are pressed together...once I saw the samsung logo pop up (after unsuccessful tries) I let go of all buttons and low and behold...the screen to select data reset appeared. From then I used the volume up and down to navigate between items....then selected the factory data reset option, clicking on the power button to select it, next I used arrows to go down to YES to get rid of all data and again click power button to select...and then voila!!!! It was magic.
I think they're wrong in saying you need to HOLD the 3 buttons UNTIL the green android appears..this only power cycled mine each time...when I held these 3 buttons together and then LET GO once the SAMSUNG logo appeared, the android guy finally came up.
Hopefully this helps someone else going nuts with this thing!!! Best of luck and blessings!