If you have tried all of the above—reset Bluetooth, updated the app, charged the car battery, and used a different phone—the dongle may be physically dead.
To use ThinkDiag effectively without an active internet connection, you must follow a specific preparation process. How to Use ThinkDiag Offline Prior Download thinkdiag offline
The Quiet Port
is primarily designed as a cloud-connected diagnostic tool, but it does offer specific offline capabilities for users working in remote areas or without stable data. If you have tried all of the above—reset
