Yeah thats right!, It took me too long to realize that, but its true.
You CAN NOT do usb tethering with a 64Bit Snow Leopard Kernel, I guess the drivers are still 32Bits.
You will not find this info on apple because, first tethering is not available on many countries (yes I have a jailbroken iPhone I’m not ashamed of that), and second the 64bit kernel is still targeted to servers, not users.
But I guess you are a power user 
, so don’t waste more time trying via usb, and do the tether stuff with bluetooth, it works great
.
Today I tried to load an image form an url and apply it to a background, well appears like setStyle don’t have the ability to load an image from URL.
So I had to look another alternative, I load the image using an Loader, but I couldn’t found a way to apply it to the background style, I did a workaround, I draw it on the graphics object, I guess it is helpful because the image is titled, but I will try more options I didn’t quite like 100% this solution.
IMPORTANT : dont’ forget the security restrictions of doing this, remember that flash can’t load images from another domain, and www.zerokernel.com is different to zerokenel.com, see Adobe for more information ( Player 9 restrictions from Adobe – PDF )
Anyway, here is the demo:
http://zerokernel.com/demos/flex/backgroundChanger/
And the code:
http://zerokernel.com/demos/flex/backgroundChanger/BackgroundChanger.zip
