Lightning Talk: Delta Firmware Over The Air (DFOTA) Update: Optim...
summary
Delta OTA sends binary patches generated by a bsdiff-based Python tool and applies them on Zephyr using a low-footprint DFOTA API that implements Heatshrink compression (vs LZ4) and runs an AB swap + MCUboot rollback strategy. API binary is reported ~4,000 KB, decoder Flash ~800 B, RAM tunable 50–50,000 B. Examples: a 20 KB hello world becomes a 191 B patch; another sample reduces 20 KB to ~3,000 B. Deployment: ~50 devices running six months with regular updates.
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