Offline OTA Update System
Field hardware needed a safe update path that worked without cloud access and never bricked the device.
Constraints
- No internet dependency during delivery or install.
- Updates had to prove authenticity before any state changed.
- A bad release had to roll back automatically without operator intervention.
Architecture
flowSigned bundle
Validator
Staging slot
Health checks
Promote / rollback
Tech stack
6 layersOutcome
Delivered an offline-first update path with atomic promotion, automatic rollback, and local audit history.
