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UNIT IV - SOFTWARE UPDATES, CYBERSECURITY & DIAGNOSTICS

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COURSE CONTENT

  • What is OTA (Over-the-Air) update
  • Benefits of OTA in vehicles
  • Basic understanding of cybersecurity threats in SDVs
  • Safety and diagnostic systems
  • Overview of ISO/SAE 21434 and functional safety (only key points)

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LEARNING OBJECTIVES:

By the end of this course, students will be able to:

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  • Explain OTA (Over-the-Air) update mechanisms and their benefits in modern vehicles.

​

  • Identify cybersecurity threats in Software-Defined Vehicles (SDVs).

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  • Understand safety and diagnostic systems in connected vehicles.

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  • Recognize key aspects of ISO/SAE 21434 and functional safety standards.

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EVOLUTION OF AUTOMOTIVE SOFTWARE

Timeline of Automotive Software Evolution:

1970s-1980s: Basic Engine Control Units (ECUs)

1990s-2000s: Multiple specialized ECUs

2010s: Centralized computing platforms

2020s+: Software-defined architectures

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CURRENT AUTOMOTIVE SOFTWARE STATISTICS

Modern Vehicle Software Complexity:

  • 100+ ECUs in premium vehicles
  • 150+ million lines of code
  • 40% of vehicle cost attributed to electronics
  • 90% of innovation driven by software

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KEY COMPONENTS OF SDVS

Core Elements:

1.Central Computing Platform

    • High-performance processors
    • Centralized data processing

2.Vehicle Operating System

    • Real-time kernel
    • Resource management

3.Connectivity Stack

    • 5G/LTE connectivity
    • V2X communication

4.Application Layer

    • User interfaces
    • Service applications

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OVER-THE-AIR (OTA) UPDATES - FUNDAMENTALS

What is OTA Update?

Definition: Over-the-Air (OTA) update is a method of distributing software updates, configurations, or programming data to vehicles remotely via wireless networks without requiring physical access to the vehicle.

Key Characteristics:

  • Wireless delivery mechanism
  • Remote installation capability
  • Automatic or user-initiated updates
  • Version management system

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OTA UPDATE ARCHITECTURE

[OEM Backend Server]

↓

[Content Delivery Network (CDN)]

↓

[Cellular/WiFi Network]

↓

[Vehicle Gateway/TCU]

↓

[Target ECUs/Domains]

Backend Infrastructure: Update management, validation

Communication Channel: Secure data transmission

Vehicle Gateway: Update orchestration

Target Systems: ECUs, infotainment, ADAS

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TYPES OF OTA UPDATES

1. Firmware Over-The-Air (FOTA)

  • Operating system updates
  • Critical safety system updates
  • ECU firmware updates

2. Software Over-The-Air (SOTA)

  • Application updates
  • Feature additions
  • Configuration changes
  • Bug fixes

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DYNAMIC DELIVERY​

  • Learn to infuse energy into your delivery to leave a lasting impression​
  • One of the goals of effective communication is to motivate your audience

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Metric​

Measurement​

Target​

Actual​

Audience �attendance​

# of attendees​

150​

120​

Engagement duration​

Minutes​

60​

75​

Q&A interaction​

# of questions​

10​

15​

Positive �feedback​

Percentage (%)​

90​

95​

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FINAL TIPS & TAKEAWAYS​

Consistent rehearsal​

    • Practice makes perfect, so strengthen your familiarity with the presentation​

Refine delivery style​

    • Pacing, tone, and emphasis​

Timing and transitions​

    • Aim for seamless, professional delivery​

Practice audience

    • Enlist colleagues to listen & provide feedback​
  1. Seek feedback​
  2. Reflect on performance​
  3. Explore new techniques​
  4. Set personal goals​
  5. Iterate and adapt

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SPEAKING ENGAGEMENT METRICS​

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Impact factor​

Measurement​

Target​

Achieved​

Audience interaction​

Percentage (%)​

85​

88​

Knowledge retention​

Percentage (%)​

75​

80​

Post-presentation surveys​

Average rating​

4.2​

4.5​

Referral rate​

Percentage (%)​

10​

12​

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THANK YOU

Brita Tamm​

502-555-0152​

brita@firstupconsultants.com​

www.firstupconsultants.com