Not a new protocol but an improved OBD Unlock Patch for BMW DME8 ECUs (Bosch MG1CS024, MG1CS049 and MG1CS201, all TriCore TC298). It prevents the FSC-related DTCs (1B2904, 1F2102, sometimes 021204 / 21B210) raised when flashing modified files. Applying it requires a new Bench unlock, even on an ECU already unlocked with an earlier version.
« Applying this Improved OBD Unlock Patch requires a new Bench unlock procedure, even for ECUs that were previously unlocked with an earlier version. Once unlocked on the bench with this new patch, you can flash via OBD without triggering FSC activation errors. »
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