Input Viewer - Firmware update

How to update the firmware of your Arduino (for Input Viewer)

1. Download the Arduino software from - http://arduino.cc/en/Main/Software - (Windows ZIP file for non admin install)
2a. Download the firmware from - http://www.mediafire.com/download/wrfkrl11zkra61n/firmware_GC.ino
2b. Alternatively, download the "No Checksum" firmware from - http://www.mediafire.com/download/137f0yeb01xyy4o/firmware_GC_nocs.ino
2c. Alternatively, download the original firmware from - https://raw.githubusercontent.com/jaburns/NintendoSpy/master/firmware/firmware.ino
3. Unzip the Arduino ZIP archive and run arduino.exe
4. Select "File -> Open" and pick the "firmware_GC.ino" file you downloaded in step 2 (confirm with OK if something pops up)
5. Select "Tools -> Board" and pick your type or Arduino (the big one is "Uno", the tiny one is "nano")
6. Select "Tools -> COM-Port" and pick your COM-Port (only one should show up, just like in NintendoSpy)
7. Press the "Upload" button to upload the firmware to the Arduino

After a few seconds, it should be done if at the bottom of the window it says so.
If something went wrong, in 99% of the cases it didn't cause any damage. Just read the error log and try to see what's wrong.
If the input viewer doesn't work after uploading the new firmware, upload the original firmware again (downloaded in step 3).

About the firmwares:
- the "firmware_GC.ino" is usually pre-installed on the boards, but it might be updated after you got your input viewer (last update 04/23/2015)
- the "firmware_GC_nocs.ino" removes the checksum function so that it outputs all data unfiltered (might get more spazzing, doesn't work with Homebrew probably)
- the original firmware can of course also be used if the modified versions don't work
If none of the 3 firmwares works flawlessly, there's either a problem with the USB connection, the controller connection, or the input viewer. If possible, try another USB port, another controller port (player 2 to 4), another console (GameCube or Wii), reboot computer, ...