My Scanner Shows "Please reconnect the main diagnostic line", What should I do?

My Scanner Shows "Please reconnect the main diagnostic line", What should I do?

This option allows you to upgrade the firmware of the tool. Connect the tablet to the vehicle through DLC and use the USB type-C cable for power supply. Follow the on screen instructions to complete the operation. Internet connection is necessary for this operation.

To upgrade the firmware

• 1. Connect the tablet to the vehicle using the main cable.
• 2. Tap Settings on the MaxiCheck Job Menu.
• 3. Tap Firmware Upgrade on the left column.
• 4. Tap the Update Now button to upgrade the latest firmware version.
• 5. Tap the Home button on the top-left corner to return to the MaxiCheck Job Menu, or select another setting option for system setup.