Temic VL381 — online firmware checksum recalculation. Compatible vehicles: Audi. Upload MOD and ORI — result in a second, preview is free.
The plugin is already selected. Upload your MOD and ORI firmware — you'll get the result in a second.
Temic VL381 — a control unit / TCU; the firmware checksums are recalculated after editing.
This unit is found on бензиновых и дизельных vehicles Audi (2004–2015) — a total of 29 models, among them Audi A4, Audi A5, Audi A5 Cabriolet, Audi A5 Sportback, Audi A6, Audi A7.
Recalculation is needed after any calibration edit — Stage 1, Stage 2, DPF off, EGR off, AdBlue/SCR off, DTC removal, Flap off, Lambda off, Speed limiter off, Torque monitor off, Hot start fix: the checksum no longer matches, and the ECU throws an error or refuses the firmware.
Upload the modified file (MOD) and the original (ORI) — the tool compares them, finds the affected regions and recalculates only the required checksums, leaving the rest of the calibration untouched. The result is ready in a second and free; downloading the fixed .bin requires registration in the portal.
Other checksum plugins from the same manufacturer — open any of them to recalculate the checksum.