I just updated the apple tv to 2.3.1 but I lost the atv flash for windows. I had to reinstall the atv flash. Is this a bug?
Every time the Apple TV gets an update, it gets rid of any hacks. You just have to reflash with the same USB key or do what I did. I created a new patch with the Apple TV 2.3.1 DMG just to be sure it worked well. There are a few problems with the current patch and 2.3.1, but there should be an update soon. You can still use the current version, but everything may not work.