Step 1:
Download The latest version program and firmware.
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image.png)
Step 2:
Turn on the power switch
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-2.png)
Press and keep hold on the BTNO button on the OSSC add-on board
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-3.png)
then connect the micro USB cable from OSSC add-on board’s USB port to your WINDOWS 10 PC.
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-4.png)
Step 3:
Stop pressing the button “BTN0″,The OSSC add-on board Programmer will auto detect the device, and display the Serial Port like “ COM**”.
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-5.png)
Step 4:
Choose the OSSC add-on board firmware bin file, and then Click the “Update” button.
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-6.png)
Step 5:
There will be a pop-up alert when the update is complete.
![](https://www.bitfunx.com/wp-content/uploads/2022/07/image-7.png)