Secure, Scalable & Production-Ready FOTA Platform for OEMs
ElectRay’s OTA Solutions deliver secure, scalable Firmware Over-the-Air (FOTA) for OEMs, enabling remote ECU updates, regulatory compliance, and continuous software improvement for SDVs.
ElectRay’s Firmware Over-the-Air (FOTA) solution enables automotive, EV, commercial, and off-highway OEMs to remotely update vehicle software with maximum security, reliability, and scalability. Built for the era of Software-Defined Vehicles (SDVs), our FOTA solution combines embedded ECU reliability with cloud-native update orchestration, helping manufacturers deploy software updates faster, reduce recalls, and continuously enhance vehicle performance across the entire vehicle lifecycle.
With ElectRay FOTA, vehicles no longer leave the factory frozen in time, they evolve safely and continuously through software.
FOTA Solutions allows OEMs to:
- Fix critical bugs and security vulnerabilities remotely
- Deliver new features and performance improvements post-sale
- Ensure regulatory compliance across global fleets
- Significantly reduce recall, warranty, and service costs
- Improve vehicle uptime and customer satisfaction
FOTA is no longer optional. It is a core pillar of connected and software-defined vehicle architectures.
Why Firmware Over-the-Air Is Critical for Modern Vehicles
Today’s vehicles run millions of lines of software distributed across multiple ECUs and domains. Managing these systems manually is costly, slow, and error-prone. Firmware Over-the-Air (FOTA) transforms vehicle software management by enabling secure, remote, cloud-orchestrated firmware updates without requiring workshop visits.
In modern zonal and centralized E/E architectures, FOTA is essential to maintain software consistency, manage inter-ECU dependencies, and support continuous software evolution in SDV platforms.
Key Business Benefits for OEMs & Fleet Operators
- Faster Time-to-Market: Deploy software updates instantly across regions and vehicle variants, accelerating innovation without hardware changes.
- Reduced Recalls & Operational Costs: Replace costly physical recalls and workshop-based ECU flashing through remote updates.
- Continuous Vehicle Improvement: Enable feature enhancements, calibration updates, and performance tuning throughout the vehicle lifecycle.
- Improved Customer Experience: Vehicles get smarter over time, delivering a seamless, smartphone-like ownership experience.
- Scalable Fleet Management: Manage updates for a few vehicles or millions using intelligent, campaign-based rollouts.
FOTA Solution Core Capabilities
Multi-ECU & Domain-Wide Updates
ElectRay FOTA supports firmware updates across VCU, BMS, ADAS, Infotainment, Telematics, Body, Powertrain, Gateway, and Central Compute ECUs.
The solution is AUTOSAR-aligned (Classic & Adaptive) and supports non-AUTOSAR environments, enabling deployment across heterogeneous vehicle architectures.
Secure End-to-End Update Pipeline
Security is embedded at every layer
- Encrypted firmware delivery
- Digital signing and authentication
- Secure boot and rollback protection
- Tamper detection and version control
Intelligent Update Strategies
- Delta updates to reduce bandwidth usage
- Resume-on-failure for unstable networks
- Pre-update validation and post-update health checks
- Safe rollback mechanisms to ensure vehicle operability
ECU Dependency & Update Sequencing Management
- Cross-ECU dependency checks before deployment
- Controlled update sequencing across domains
- Version compatibility validation across vehicle variants
- Safe orchestration for zonal and centralized E/E platforms
Cloud-Native & OEM-Controlled
The platform integrates seamlessly with AWS, Azure, or private cloud infrastructures.
OEMs retain full ownership and control of update policies, certificates, data, and deployment logic through API-driven integration with existing backends and connected vehicle systems.
Technical Architecture Overview
ElectRay’s FOTA solution is built on a layered, production-grade architecture designed for scalability, safety, and large fleet deployments. The architecture cleanly separates cloud orchestration, vehicle-level control, and ECU-level execution, enabling reliable OTA updates across diverse vehicle platforms.
OEM OTA Cloud & Campaign Management Layer
The cloud layer manages the complete OTA lifecycle and provides OEMs with full operational visibility and control.
Key responsibilities include:
- Firmware artifact storage, versioning, and compatibility metadata
- OTA campaign creation, scheduling, and rollout management
- Vehicle and fleet targeting by VIN, variant, region, or configuration
- Secure messaging and APIs (HTTPS, MQTT) for update coordination
- Security, identity, access control, logging, and compliance audit trails
This layer integrates seamlessly with OEM backends and cloud environments (public or private), while retaining OEM ownership of data and policies.
Vehicle-Level FOTA Orchestration Layer
At the vehicle level, ElectRay deploys a dedicated FOTA Master that acts as the central intelligence for OTA execution.
Key responsibilities include:
- Orchestrating the overall update flow at vehicle level
- Managing ECU update order, dependencies, retries, and rollback logic
- Monitoring vehicle safety and state conditions (ignition, speed, battery, charging, etc.)
- Coordinating secure flashing via diagnostic services
- Reporting real-time status and results back to the cloud
This design ensures OTA updates are safe, deterministic, and resilient, even in complex multi-ECU and zonal architectures.
ECU Update Execution & Secure Flash Layer
At the ECU level, updates are executed using standard, proven mechanisms.
Includes:
- UDS-based diagnostic communication
- Memory services
- Secure flash bootloader integration
- Firmware transfer, verification, and activation
- Support for fail-safe and recovery mechanisms
This layer ensures compatibility with AUTOSAR-aligned (Classic & Adaptive) as well as non-AUTOSAR ECUs, without imposing architectural lock-in.
Safety, Cybersecurity & Regulatory Readiness
ElectRay FOTA is designed to support automotive safety and cybersecurity expectations,
Including:
- ISO 26262 (Functional Safety) support mechanisms
- ISO 21434 cybersecurity principles
- UNECE R155 (Cybersecurity) and UNECE R156 (OTA / SUMS) readiness
- Secure key management and access control policies
This enables OEMs to deploy OTA updates with confidence and regulatory alignment.
FOTA Use Cases Across Vehicle Segments
- Electric Vehicles (EVs): VCU, BMS, MCU, Inverter, and charger updates
- Commercial Vehicles: Fleet-wide ECU updates with minimal downtime
- Off-Highway & Agricultural Equipment: Remote updates in low-connectivity environments
- Manufacturing & EOL: Factory flashing with seamless transition to OTA post-SOP
- Feature Enablement: Software-locked features activated OTA
- Cybersecurity Patching: Rapid response to emerging threats
Built for OEMs, Tier-1s & Mobility Innovators
ElectRay FOTA can be deployed as:
- A standalone OTA solution
- Part of a Connected Vehicle Platform
- A white-label OEM OTA system
Flexible commercial models support licensing, per-vehicle pricing, or full platform deployments.