I’m going to go over this from the start - apologies if this is a little simplistic. I’m also assuming you’re using Windows.
Prerequisites: you will need the Arduino IDE (IDE means Integrated Development Environment) installed first, which you can get from here: https://www.arduino.cc/en/Main/Software
1. Find the teacup firmware file you downloaded (it should be a zip file) and double-click on it to open it. You should see an explorer window open with the folder “Teacup_Firmware-master” visible.
2. Open another explorer window. You can do this by pressing ctrl+enter then typing “Explorer” (without the quotes).
3. In the new explorer window, click on the C: drive on the left hand side, then on the “New Folder” option at the top of the window. Give the new folder a name, such as “temp” (without the quotes).
3. Double-click on the new folder.
4. You should now have two explorer windows open - one with “Teacup_Firmware-master” in it, the other open in the new folder you just created. Click and drag the “Teacup_Firmware-master” folder to your newly created folder. This will extract the zipped-folder to your hard drive.
5. Once the firmware has been extracted, close the explorer window you dragged from, leaving the window you dragged to open.
6. Double-click on the “Teacup_Firmware-master” folder you just extracted into C:\temp to open it, then double-click on the configtool.py file.
This should start the config tool. If it doesn’t, carry on from step 7 below.
7. Open a command prompt by pressing Ctrl+Enter, then typing in “cmd” (without the quotes) and pressing Enter.
8. Change to the temp directory you created by entering the following commands and pressing Enter after each one:
C:
cd \temp\Teacup_Firmware-master
9. Enter the following command and press enter:
python configtool.py
If the configuration tool does not start, you should see an error message. Copy it and reply with it here and we can figure out what’s going wrong and move on to next steps.