What you need

  1. Simplicity Studio v5

  2. SDK v4.4 or later

  3. A Silicon Labs Wireless Starter Kit with EFR32xG21 radio board

  4. or a custom HW with a Jlink probe connected to it (WSTK in OUT mode works!)

  5. Railtest project already created (see Rail –> Adding bootloader support)

Once you have all of the above, you are ready to start