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Glossary · UNECE / Type Approval
OTA Update
Also known as: Over-the-air update
Over-the-air software update delivered to a vehicle ECU after manufacture.
An OTA update is software delivered remotely (typically over cellular or Wi-Fi) to one or more ECUs in a deployed vehicle. UNECE R156, R155, and AIS 189/190 require update authenticity, integrity, rollback, and recording — and the update must respect the vehicle's RXSWIN configuration where applicable.
Related terms
Software Update Management System (SUMS)
Process system covering planning, distribution, and recording of vehicle software updates.
Secure Flashing
Authenticated and integrity-checked update of ECU firmware.
RXSWIN
Regulation X Software Identification Number — identifier for the software set covered by a UN regulation type approval.
Need help applying OTA Update on a programme? Use the contact form or request a KAVACH demo.