- Ensure RA8D1 is connected to the computer via DEBUG1 USB port
- Launch Renesas Flash Programmer and click File > New Project...
- In Project Information set Microcontroller to RA
- Set Project Name to desired name, for example RA8_Flash
- In Communication set Tool to J-Link and Interface to SWD
- Click Connect. RFP should initialize and connect to the device.
- In Operation tab, click Add/Remove Files... under Program and User Key Files.
- Select the hex file you want to flash to the device. Once the file is selected, click Start. RFP flashes the given binary to the device.