![]() ![]() ECUs have internal security that will not allow them to be programmed with another ECU’s information.Īll product names, logos, and brands are the property of their respective owners. Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ![]() ![]() This bulletin details the Techstream ECU flash reprogramming process and outlines the use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates for specific vehicle models/ECUs are released asįield-fix procedures described in individual Service Bulletins. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. ![]()
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