Step1: Change the upgrade file to "SPDBOX.CAN" and copy the modified upgrade file to the root directory of the USB flash drive.

Step2: Insert the USB flash drive into the host and Click “System settings”

Step3: Click “Version”-“CAN box version”

Step4: Enter the upgrade interface and check whether the path to the upgrade file is displayed here. If it is empty, do not click upgrade. First go to the file manager to check whether the USB disk can be read.

Step5: Click “Start  upgrading”, and then the upgrade status is displayed as Started. Just wait for the upgrade status to be Successful. 

YouTube Video link：https://youtu.be/UzqdjmBvXEw