How to Install an OTA Agent on Android Fleet Devices (Factory, MDM, and Field)

The challenge of installing an over-the-air (OTA) update agent on devices without an existing update mechanism is a significant logistical problem, as it involves establishing the OTA channel through alternative means. This constraint, often overlooked until deployment, requires that the agent be pre-installed via one of three methods: integrated into the firmware at the factory, delivered through an existing mobile device management (MDM) system, or manually sideloaded via USB. The most efficient and cost-effective approach is the first, baking the agent into the firmware before shipping. This preemptive step avoids costly manual interventions later, such as having technicians physically update each device. Esper Airwave addresses this by supporting all three installation paths and ensuring that the OTA agent is signed with the device owner's certificate, securing the update process against unauthorized access.

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