Hi,
I have purchased an Uno clone which seems to be working fine but I can't seem to get it into DFU-mode. The board has a 16U2 chip but when I short the two pins closest to the USB port on the 16U2 pin header nothing happens. From doing my research I am guessing it is because I need to solder a pull-up/ pull-down resistor onto the board somewhere and then short the header pins. However, I don't want to start soldering things until i'm absolutely sure I know what I'm doing as I don't want to damage anything. Also, I don't know what resistor rating i should be using. If anyone could possibly take a look at the attached images and work out what I need to do I'd be very grateful.
Thanks
