Arduino C2 Interface
This is a web based C2 interface for flashing and reading SiLabs EFM8 based BusyBee MCUs. You will to connect an Arduino UNO or Nano to your PC. Once you have everything setup, click the "Connect to Arduino" button where you will have to select the serial port that coresponds with your Arduino. From there on you will be guided through the whole process, your Arduino will be flashed with the needed firmware during the process.
Should you run into any issues, feel free to drop by on github and let me know.