The printer was set up as wireless and was working perfectly yesterday, but today, it refused to print in wireless mode. However, when I set it up as USB, it works fine.

What I've tried:
1. Updated firmware
2. Reset Printer
3. Reset Network
4. Unplugged printer and held down restart button, then plugged back in

So far, nothing has worked.

When I tried to set the printer up as wireless, it got to the point of asking me to unplug the USB cable. But, when I unplugged the cable, Next would never light up so the wireless installation could finish.

I'm flummoxed and don't know what to do next.