Control Module Update

Step 1: Downloading the firmware

Find available versions here R2 firmware files.

Step 2: Updating the Firmware

1. Start the R2. Make sure the R2 is in `Ready Mode`.

2. Press `F1` to access the Menu.

firmware update step 2

3. Press the `Heating +/- Buttons` to navigate to the `USB Mode` tab. Press the `Fan/Drum + Button` to enter the USB Mode Settings.

firmware update step 3

4. On the `USB for RoasTime` tab, press the `Fan/Drum + Button`. The text will change to USB for SD Card.

firmware update step 4A firmware update step 4B

5. Connect the R2 to the computer. The drive should show up in Windows Explorer / Finder. If the window does not appear, reconnect the USB Cable. Copy the file to the Firmware folder on the SD card drive and delete the old one.

USB drive connected

You will see a new drive appear on your computer when the R2 is connected in USB Mode. The drive will contain a folder named Firmware with a file named bullet_io.bin. Copy the downloaded firmware file into the firmware folder, replacing the existing file.

Verify the filename

Verify the downloaded firmware file is named bullet_io.bin before copying it to the SD card. Do not copy other files into the firmware folder. See the images below.

If you've downloaded multiple copies, the file might be named bullet_io (1).bin or similar. Please rename the file to bullet_io.bin before proceeding.

Connected R2 drive example on MacOS R2 firmware folder contents on MacOS. Replace bullet_io.bin with the new firmware file you downloaded. replace r2 firmware mac

Connected R2 drive in Windows Explorer R2 firmware folder contents in Windows Explorer. Replace bullet_io.bin with the new firmware file you downloaded.

6. Press the `Fan/Drum - Button` to set the USB Mode back to USB for RoasTime.

firmware update step 6

7. Press the `Heating + Button` to navigate to the FW Update tab. Press the `Fan/Drum + Button`. The screen will flash for a few seconds and then stop. The Firmware is now updated.

firmware update step 7

8. If the board does not restart, turn off the R2 and turn it back on.

9. Press the `Button A` in `Ready Mode` to toggle different Info Display pages and check if the Firmware Version has changed.

firmware update step 9

Step 1: Downloading the firmware​

Step 2: Updating the Firmware​

1. Start the R2. Make sure the R2 is in Ready Mode.​

2. Press F1 to access the Menu.​

3. Press the Heating +/- Buttons to navigate to the USB Mode tab. Press the Fan/Drum + Button to enter the USB Mode Settings.​

4. On the USB for RoasTime tab, press the Fan/Drum + Button. The text will change to USB for SD Card.​

5. Connect the R2 to the computer. The drive should show up in Windows Explorer / Finder. If the window does not appear, reconnect the USB Cable. Copy the file to the Firmware folder on the SD card drive and delete the old one.​

6. Press the Fan/Drum - Button to set the USB Mode back to USB for RoasTime.​

7. Press the Heating + Button to navigate to the FW Update tab. Press the Fan/Drum + Button. The screen will flash for a few seconds and then stop. The Firmware is now updated.​

8. If the board does not restart, turn off the R2 and turn it back on.​

9. Press the Button A in Ready Mode to toggle different Info Display pages and check if the Firmware Version has changed.​