OTA Firmware Update Design: Best Practices for IoT
6 min read
OTA (over-the-air) firmware updates let you fix bugs and add features without recalling devices. Doing it safely is non-negotiable.
- Secure boot and image verification: Only run signed, verified images. Reject tampered or corrupted payloads.
- Rollback: Keep previous image; if new image fails health check, revert.
- Delta updates: Where possible, send only the diff to save bandwidth and time.
- Staged rollout: Roll out to a small set of devices, then expand after validation.
Unverified images, no rollback, or power loss during write can brick devices. Design for atomic swap and recovery. At Hendoi we design and implement OTA systems for IoT products. USA, Canada, Bengaluru. Contact us.
📞 +91-9677261485 | 📧 support@hendoi.in | Contact us
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