Product

April 2026 Product Updates

Until now, updates of Electronic Control Units (ECU) required physical access to the machine. This means a service engineer, a laptop, a specialized cable, and an expensive truck roll to a remote quarry or construction site. For routine updates, this process is merely annoying and costly. For critical safety fixes, it is dangerously slow. The effort scales linearly with your fleet size, turning software deployment into a massive drain on your service budget. 
  • Author

    Umberto Nicoletti
    Director of Product and Engineering

  • Release date

    May 6, 2026

Fleet-Wide Over-the-Air ECU Updates for OEM Fleets

This manual process is no longer sustainable. Modern development cycles demand a higher frequency of updates for new features, extended functionality, and critical bug or security fixes to shorten time-to-market. Furthermore, regulatory pressures are mounting. Starting in December 2027, the EU Cyber Resilience Act (CRA) will require manufacturers to deliver security updates promptly and free of charge throughout a product's expected lifetime. Relying on on-site technician visits to achieve this level of compliance across thousands of machines with just a handful of technicians is mathematically impossible.

Proemion is the only telematics provider in the off-highway industry specifically dedicated to OEMs. We understand that telematics must be more than simple fleet management – it must be a strategic enabler for uptime and innovation. That is why we are introducing remote over-the-air (OTA) ECU application updates. Powered by the CANlink® mobile, this solution is available for selected controllers from TTControl and Bosch Rexroth BODAS. It allows you to update ECU applications over-the-air using standard Unified Diagnostic Services (UDS), eliminating integration headaches and enabling smarter decisions across every department.

How Remote ECU Application Updates Work

Secure Upload and Approval Process

The deployment process begins in the Proemion DataPlatform. An authorized user uploads the required HEX file for the ECU application. To guarantee maximum security, OEMs can utilize optional application signing to verify software integrity.

You then select your target machines. You might choose a single machine for a pilot test, a specific regional group, or the entire OEM fleet. We enforce a strict two-person approval process for campaign execution. One person cannot push a fleet-wide update alone, adding a critical layer of operational security.

Secure Delivery to the Machine

Once approved, the DataPlatform pushes the application to the machine's Telematics Control Unit (TCU) via the CANlink® mobile over an encrypted connection. The TCU verifies the file's binary integrity before proceeding.

Crucially, the TCU does not initiate flashing immediately. It signals that an update is available and waits. Your custom on-machine application verifies that the equipment is in a safe state (for example, the engine is off, and the ECU is idle) before approving the operation. You retain full control over your data and define exactly what constitutes a safe state for your specific machinery.

UDS-Based Flashing

After the safe state is confirmed, the TCU opens a standard UDS diagnostic session with the target ECU. It transfers the new application using the exact same sequence your service engineers would run locally with a laptop and a cable.

If an update fails due to a power loss or other unforeseen event, the system handles it gracefully. The ECU retains its bootloader, ensuring it remains accessible for a remote retry. By never altering the bootloader, we guarantee that the machine is never left in an unrecoverable state.

Transforming OEM Fleet Operations

Integrating fleet-wide over-the-air ECU updates for OEM fleets transforms how you manage your aftermarket services. It turns a logistical bottleneck into a measurable business impact.

Enhanced Efficiency and Speed

Fixes that previously took weeks or months now reach your fleet in hours. When an engineering team finalizes a software update, you can deploy it instantly from your office. There is no need to wait for the next scheduled service window or dispatch a technician. Your service department can focus on complex repairs rather than routine software administration.

Cost Savings

Eliminating truck rolls drastically reduces operational costs. Every physical visit you eliminate saves fuel, labor hours, and vehicle wear. Furthermore, the OTA process minimizes machine downtime. A machine only needs to be idle for a few minutes during a lunch break to complete the flashing process, keeping your customers productive and highly satisfied.

Regulatory Compliance

The EU Cyber Resilience Act fundamentally changes the compliance landscape for equipment manufacturers. You must be able to prove that you can deliver critical security patches without undue delay. Proemion’s solution provides detailed logging and verification for every update. You can see exactly which machines received which application version, who approved it, and when it succeeded, giving you the comprehensive audit trail required by regulators.

Increased Safety and Reliability

The ability to deploy timely safety fixes is a massive competitive advantage. You can push critical patches globally in a single afternoon. Because the system uses strict safe-state verification before flashing, you can guarantee that updates never interfere with active machine operations, increasing the overall reliability and safety of your fleet.

The Technology Powering Remote Updates

Our end-to-end solution combines robust hardware, a scalable cloud platform, and standard protocols to deliver zero compatibility issues.

The CANlink® mobile 3600 serves as the powerful TCU at the heart of the system, acting as a secure gateway to the machine's internal networks. The DataPlatform provides centralized management, allowing your teams to coordinate global update campaigns through an intuitive web portal. Finally, by leveraging Unified Diagnostic Services (UDS), we use the industry-standard flashing protocol. This ensures that the remote process mirrors the highly reliable local process your engineers already trust.

Take Control of Your Machine Data

The manufacturers that treat every machine in the field as an updatable, auditable software endpoint will dominate the off-highway industry over the next decade. Fleet-wide over-the-air ECU updates for OEM fleets are not just a technical feature; they are a fundamental shift in how you support your products, reduce your service costs, and increase your aftermarket revenue.

You have the opportunity to eliminate integration headaches and gain full control over your equipment's software lifecycle. Stop dispatching trucks for simple software fixes. Empower your engineering and service teams to deploy verified updates globally with a single click. 

Do you want to know more?

Reach out to us today to explore our early access program and make machine data usable, reliable, and valuable across your entire organization.

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