Hello I have an Arduino Uno R3 and Arduino Wifi Shield.
I tried to programming a Arduino Uno R3 ( when Wifi Shield was stacked on Arduino Uno), but I unfortunately on Wifi shield was connected DFU programming jumper. Now, when I use wifi shield on Wifi shield Error diode lights.
Anyone can give some help ? Am I overwrite a firmware on Wifi Shield ?(when upload program on Arduino Uno, when jumper was connected on wfifi Shield )?