About cellular modem firmware

Cellular modem firmware is the software that runs on a device’s cellular modem, controlling how it connects to mobile networks, communicates with carriers, and handles data transmission. Provided by the modem manufacturer, it manages functions such as network registration, signal handling, data transmission, and support for cellular technologies like LTE and 5G. This firmware plays a critical role in ensuring reliable connectivity, network compatibility, and overall communication performance.

What it allows us to do

Cellular modem firmware allows Digi to enable reliable cellular connectivity on its devices, ensuring they can communicate with carrier networks and operate across different regions and technologies. By supporting modem firmware updates, Digi can also help customers maintain network compatibility, improve performance, and adapt to changes in carrier requirements over time.

Why it matters to you

Cellular modem firmware directly affects how well your devices connect to cellular networks. It impacts reliability, performance, and compatibility with carriers, which are critical for keeping devices online and functioning properly. Keeping modem firmware up to date helps ensure stable connections, supports evolving network requirements, and reduces the risk of connectivity issues in the field.

How a firmware update works

How you update depends on how your devices are managed. For individual devices, you may want to access your device locally via the Web UI or CLI consoles. For a fleet of devices, you can push firmware updates to many devices remotely via Digi Remote Manager. Modem firmware is provided by the manufacturer and is often tied to specific carriers, it is important that you use the approved firmware for their cellular modem and network.

Updates are typically planned and tested in advance, since they may temporarily interrupt connectivity while the modem is being updated.

The cellular modem for your device should be updated as new versions become available. Make sure to review Before you begin a cellular modem firmware update as the methods for how you can update depend on the DAL OS firmware running on your routers.

Carrier certifications and dependencies

Cellular modem firmware is often tied to carrier certifications and regulatory requirements. Updates may depend on carrier approval and must align with specific modem models and network operators. Using certified firmware ensures proper network operation, compliance, and continued connectivity across supported carriers.