A Beacon deployment is never finished the day it ships. This article explains how a Beacon fleet stays current through remote firmware management and over-the-air (OTA) updates—keeping thousands of devices secure and functional without a single truck roll.
Why remote firmware matters
A Beacon installed on a ceiling or behind machinery cannot be easily opened. Remote management lets you fix bugs, close vulnerabilities, and add features long after installation.
FOTA architecture
The Beacon receives a signed firmware image pushed by a gateway or cloud job, stores it in a spare bank, and swaps to it on the next reboot—all without physical access.
Fleet version control
Track each Beacon‘s running version in a central registry. Knowing exactly which firmware a Beacon runs is the foundation of safe, auditable updates.
Differential updates
A Beacon only downloads the changed blocks (delta) rather than the whole image, slashing bandwidth and airtime on constrained links.
Low-power upgrade window
Because a Beacon runs on a coin cell, the upgrade runs inside a scheduled low-traffic window so the radio burst does not wreck the battery budget.
Resume and integrity
A Beacon resumes a partial download after a power loss and verifies a checksum before committing, so a failed transfer never bricks the device.
Rollback safety
If a Beacon fails to boot the new image, it automatically reverts to the previous bank, guaranteeing the network stays up even on a bad release.
Secure signing
Every image a Beacon accepts is authenticated with ECDSA, so attackers cannot flash malicious firmware onto the device.
Staged rollout
Push first to a small canary subset of the Beacon fleet, watch telemetry, then expand—containing the blast radius of any defect.
Batch configuration
The same channel also delivers configuration to a Beacon: transmit power, advertising interval, and sensor thresholds, all without reflashing.
Monitoring
Confirm each Beacon reports its new version and health after the job, closing the loop on every update.
Conclusion
Remote firmware turns a static Beacon into a device you can improve for years. With FOTA, signing, rollback, and staged rollout, a large fleet stays secure with almost no on-site effort.