FAQs Brief Specs Question Why does the screen flash when the engine ignition starts? Features Answer This is normal. It is commonly caused by electromagnetic interference. Functions Question How to upgrade the system software? Answer What's In The Box? (1) Power on the tool and ensure a stable Internet connection. (2) Go to "Settings"->"App Update",tap "OTA" and then tap "Check Version" to enter the system upgrade interface. Comparison (3) Complete the process by following the instructions on the screen step by step. It may take a few minutes depending on the status of your network. After the upgrade is finished, the tool will automatically restart and display the main interface. FAQs