New BENCH and BOOT protocols for Denso XXX-H594A-XX ECUs – Yamaha.

KESS3 expands the operational possibilities for the latest Yamaha N-Max 125 and X-Max 125 models equipped with the Denso XXX-H594A-XX ECU family.

The BOOT connection allows you to read and write the entire ECU content by connecting directly to the circuit board with the ECU opened.

The update also introduces BENCH connection in Virtual Reading mode for the N-Max 125 and X-Max 125. This mode allows you to retrieve the original file from the database by connecting directly to the ECU connector, without opening it: a useful option when the ECU has already been removed from the vehicle.

The new modes complement the OBD connection in Virtual Reading mode already available, giving workshops greater flexibility when working on the latest-generation Yamaha 125 scooters.

Real benefits for your workshop:

• New BENCH and BOOT connections for Yamaha N-Max 125 and X-Max 125
• Full ECU reading and writing in BOOT mode
• Virtual Reading mode in BENCH and OBD
• Support for 2021 models (B6Y and BMJ) and 2025 models (BPB)
• Multiple access modes for greater operational flexibility on RH850 HWII family ECUs

With KESS3, workshops can expand their tuning and repair services for the scooter segment, using different connection modes according to the requirements of each operation.