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![AEG combi microwave unusable after update: device thinks it is a steam oven](../images/aeg.combi.microwave.jpg) [AEG combi microwave unusable after update: device thinks it is a steam oven](https://taketonews.com/aeg-combi-microwave-unusable-after-update-device-thinks-it-is-a-steam-oven/) (March, 2022)

OTA Updates

Created by Miroslav Biňas / mirek

Notes: * https://www.androidpolice.com/2020/03/30/its-2020-why-dont-samsung-phones-support-androids-seamless-updates/

## What is OTA? > the ability to download applications, services and configurations through a mobile or cellular network > ([Gartner](https://www.gartner.com/en/information-technology/glossary/ota-over-the-air))

![Illustration of OTA Update](../images/ota.update.png) Notes: * https://blog.particle.io/ota-firmware-updates/

## OTA Benefits * continuous improvement of devices * increase functionality * improves security * save cost

## Live Example

## Whats wrong?

### OTA services must be fast, secure and easy to use.

## Design Considerations

### Incremental Roll-Out of OTA Updates

### Recovery of Versions

![](../images/ota-a.b.partitions.png)

### Code Compatibility Verifications

### Secure Communication

### Partial Updates

### Authenticating the OTA Update Image

### Security from Physical Attacks

![Update in Kosice](../images/update.in.kosice.jpg)

### Minimizing Intrusion

![IoT Architecure](../images/iot.architecture.png)

[![ESP32/ESP8266: MicroPython OTA Updates via PHP Server](https://i0.wp.com/randomnerdtutorials.com/wp-content/uploads/2022/03/MicroPython-OTA-Updates-PHP-Server.jpg?resize=1024%2C576&quality=100&strip=all&ssl=1)](https://randomnerdtutorials.com/esp32-esp8266-micropython-ota-updates/)

[![OWASP](../images/logo-owasp.png)](https://owasp.org/)

[![OWASP Top Ten](../images/owasp.iot.top.ten.png)](https://wiki.owasp.org/index.php/OWASP_Internet_of_Things_Project#tab=IoT_Top_10)

## Existing Solutions * [FreeRTOS](https://www.freertos.org) * [Mongoose OS](https://mongoose-os.com) * [balena.io](https://www.balena.io) * [Barbara OS](https://barbaraiot.com)

## Questions?