Precautions When Performing an Ethernet ECU Upgrade Using an LTE/5G Tablet

When performing an ECU upgrade using the Ethernet protocol on a cellular carrier (LTE/5G) tablet, mobile data must be turned off.

Reason: Even when a static IP address is configured to use the Ethernet protocol, the connection may be assigned a dynamic IP address, preventing the CCU from recognizing the diagnostic tool.

For details, refer to the diagnostic tool pop-up message shown below.