Cannot install

I created the patchstick and put on my Apple TV, but when I plug the power back in, I see a screen with a symbol like “no smoking” but without the cigarette, and the apple logo with the screen greyed out.
Nothing happens. Any idea?
I am using 2GB Sandisk Titanium without U3, as shown in the http://forum.atvflash.com/viewtopic.php?f=5&t=68 that this USB works.
let me know…thanks

Does pressing the VOL DOWN (—) and MENU buttons get the AppleTV to restart itself and give you an option to Restore it? I think the prohibited sign means it can not find the OS on the AppleTV. Let me know if you can get it to restore or not.

Yes, I can restore it like you mentioned. My Apple TV goes to the main menu normally after booting using the USB (after the prohibited sign)

Sorry, I did not carefully read all the instruction because of some excitement. Therefore, i copied the aTV to my “Applications” folder. All good now. Thanks.