This combination is technically the last stable version that supports the 5054A hardware via community patches. Newer versions (ODIS 11+) strictly require newer interfaces like the VAS 6154. Are you seeing a specific error code
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VAS 5054A, VAS 6154, or J2534 PassThru devices. Odis 7.2.1 Vas5054a Windows 10
: The VAS5054A does not have an internal battery. It draws its power from the vehicle's OBD2 port. You must connect the VAS5054A to the car's OBD2 port before connecting it to your computer via Bluetooth or USB. The car's ignition should be switched on (or at least in the accessory position) to provide power.
Right-click OffboardDiagnosticInformationSystem-Service_7_2_1 and select . This combination is technically the last stable version
While newer ODIS versions exist, 7.2.1 is highly regarded for its stability and compatibility with older VAS5054A interfaces, especially the commonly used "Chinese Clone" versions.
Legacy Bluetooth profiles in the VAS5054A clash with modern Windows 10 internal Bluetooth stacks. This link or copies made by others cannot be deleted
Even with a perfect guide, things can go wrong. Here are the most common problems users encounter with this specific combination, drawn from forum discussions, and how to solve them.
Turn the vehicle's ignition to the position (engine off).