My Slingbox 500 has worked fine for a year, until last week. Suddenly, I could not access it using a PC at work or my Mac Book at home, but it worked well on my iPhone. A friend suggested a reset of the Slingbox, which I did. Now, I can access it by computer, but it no longer works on my iPhone, and I get a message that I need to configure my router. This makes no sense, if it's working on the Mac Book and my iPad. Can anyone help?