Boot flow
Startup sequence, image validation, fallback and error handling.
Bootloader and OTA firmware development
Bootloaders and OTA updates for embedded products that must be updated in a controlled way. Work covers firmware signing, rollback, partitions, diagnostics, recovery and release procedures.
How we can help
Security
Signing, verification, keys, anti-rollback and reduced unauthorized update risk.
Robustness
Power loss, incomplete packages, incompatible versions and recovery scenarios.
How we work
Context and goals
Review goals, constraints, existing code, systems and business priorities.
Architecture and plan
Define risks, architecture, measurable checkpoints and an execution plan.
Development and verification
Implement or debug in verifiable steps on real data, code or hardware.
Delivery and support
Deliver code, documentation and decisions the team can maintain and evolve.
A new idea or an existing project? Tell us where you are starting from.
The service in detail
Open a topic to explore activities, technical choices and scope.
Update without putting the product at risk
A firmware update is not just a file transfer. It must handle interruptions, wrong versions, corrupted images, rollback, logs and field support.
- Bootloaders for MCUs, ESP32, STM32, embedded Linux systems or mixed architectures.
- Firmware signing, integrity checks, versioning and compatibility policies.
- Dual-bank OTA, staged updates, rollback and recovery mode.
- Update logs and procedures for technical support and production.
From OTA to the device lifecycle
OTA is one part of the product-management architecture. Field work also needs identifiable versions, diagnostics, release criteria and an operational view that helps teams understand the outcome of every update.
- A relationship between each device, hardware revision, installed version, configuration and compatible releases.
- Post-boot validation, image confirmation, outcome collection and rollback handling without losing technical context.
- Dashboards or support tools that show state, events and anomalies while reserving actions for authorized roles.
- Release artifacts and technical documentation that keep updates, components and decisions traceable over time.
Review the architecture before deployment
The safest time to define the update path is before devices are deployed. For an existing fleet, the first step is to check what can be changed safely within the hardware and boot constraints already in place.
- Flash layout, boot control, trusted keys, image compatibility and the available fallback path.
- Behaviour during power loss, failed first boot, lost connectivity and repeated rollback attempts.
- Release ownership, staged rollout criteria, version visibility and the data support needs to diagnose failures.
- A validation matrix that reflects hardware revisions and the failure modes that matter in the field.
Release and operations
- Release and operations
- Build process, changelog, tests, rollout, version visibility and post-update diagnostics.
Frequently asked questions
Can OTA be added to existing firmware?
Yes, after checking memory, partitions, boot flow, connectivity and security constraints.
Is rollback always required?
Not always, but it is valuable when devices are in the field and manual recovery is expensive.
What should be tested before an OTA rollout?
Test corrupted or incompatible images, power loss, connectivity loss, failed first boot, recovery behaviour, rollback loops, hardware variants and version reporting.
Let’s discuss your project
Tell us your goal, what is already available and what needs to improve. We can then assess the next step together.