Dual Partition Design

The ‘No Return’ Path of Self-Developed Bootloader for STM32: An OTA Push Turns 100,000 Online Devices into Bricks, Rescued by the Reserved ‘Dual Partition’ Scheme

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The 'No Return' Path of Self-Developed Bootloader for STM32: An OTA Push Turns 100,000 Online Devices into Bricks, Rescued by the Reserved 'Dual Partition' Scheme

We were working on a smart streetlight control system, deploying over 100,000 terminals nationwide, with the core being the STM32F429. The system periodically receives OTA firmware updates via a 4G network, automatically rebooting after the upgrade, completely unnoticed by the users. The initial OTA tests went smoothly, and everyone gradually got used to the automatic … Read more

Practical Implementation of Secure Boot Mechanism in Embedded Systems: Signature Verification, Dual Partition Design, and Rollback Mechanism

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Practical Implementation of Secure Boot Mechanism in Embedded Systems: Signature Verification, Dual Partition Design, and Rollback Mechanism

With the widespread application of embedded devices in critical fields such as industrial control, automotive electronics, and the Internet of Things, system security has become an essential aspect of design. The Secure Boot mechanism serves as the first link in the firmware trust execution chain, effectively preventing the execution of unauthorized code and ensuring that … Read more