I got it working, but don't know yet why my freshly compiled firmware failed. I was using the 2010 version of WinAVR software, but I found one thread where they mentioned to use the old WinAVR software with the patch (which is missing):
http://forum.mikrokopter.de/topic-post242279.html#post242279
Is the old version of WinAVR still necessary? What version is everybody using to compile their firmware? Will Atmel Studio work? (http://www.atmel.com/tools/ATMELSTUDIO.aspx)
http://forum.mikrokopter.de/topic-post242279.html#post242279
Is the old version of WinAVR still necessary? What version is everybody using to compile their firmware? Will Atmel Studio work? (http://www.atmel.com/tools/ATMELSTUDIO.aspx)