ISO image invalid

I download the iso file of asteriskNOW 3.0.0 available currently at the main downloads page. After downloading when I tried to burn the image using windows 7 usb/dvd tool to a USB an error occurs that iso image invalid. Please suggest how do I manage installation. thanks

This isn’t the AsteriskNOW forum.

As commonly used, an ISO can only be invalid if it is zero length or larger than the media. It is conceivable that the software you are using is takinga narrower view of what constitutes an ISO Image, in which case you need to use less picky software.

The resulting image might not load successfully, but that should not be detectable by the tool you use ot copy the image.