When you receive your new board it comes with a postcard which directs you to our site to download the SDK. If this card is missing, please go to https://www.bitflow.com/current-downloads/ and download the SDK. Unzip the file, open the pdf and follow the instructions. If you run into any issues, please go to the last page of the pdf. Here you will see a list of items to include when you contact support via email.