Proceeding of the Faculty of technical Sciences, Novi Sad

Electrotechnical and Computer Engineering

Vol. 41 No. 02 (2026): Proceedings of the Faculty of Technical Sciences

Implementation of an Over-the-Air update system for IoT devices

  • Марко Драгићевић
DOI:
https://doi.org/10.24867/34BE15Dragicevic
Submitted
February 12, 2026
Published
2026-03-09

Abstract

This thesis presents the design, architecture, and implementation of a comprehensive framework for secure and scalable Over-the-Air (OTA) firmware updates, focusing on IoT devices based on the ESP32 microcontroller. The server-side portion of the system leverages a serverless paradigm on the Amazon Web Services (AWS) platform, utilizing services such as Lambda, S3, DynamoDB, and IoT Core. The client-side application implements a robust mechanism for digital signature verification and a secure installation process. The administrative user interface, for managing versions and initiating the update process, is developed using the React framework.

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