This bulletin details the Techstream ECU flash reprogramming process and outlines use of the. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins.
Firmware checksum verification and recalculation. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU.
Due to certain malfunctions, the flash drivers can corrupt the memory locations of the Flash. These drivers act as a liaison between the memory location and the external tool for ECU flashing.