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A router's firmware is its operating system. Manufacturers release updates to fix security weaknesses, close newly discovered vulnerabilities and add features. A router that never gets updated slowly becomes the weakest point on the network it protects.
Why updates matter
New vulnerabilities in networking equipment are found every year, and attackers scan the internet for devices still running affected versions. The manufacturer's fix only helps once it is installed. For routers on remote, unattended sites, that is exactly where things go wrong: they are set up once and never visited again.
Patching a fleet without site visits
Remote management platforms solve this. With Teltonika RMS, for example, you can see the firmware version of every router in one list, schedule updates for groups of devices and confirm they came back online, all without anyone driving to site. Updates can be tested on a few devices first, then rolled out to the rest outside working hours.
A simple patching routine
- Check for new firmware from the manufacturer regularly, and read the release notes for security fixes.
- Test the update on one or two representative devices.
- Roll it out in batches, outside critical hours, and confirm each batch is back online.
- Record the version on each device, so your estate list stays accurate.
End of life devices
Every model eventually stops receiving updates. Once a router reaches end of life, new vulnerabilities will not be fixed, so it should be planned out of the estate. We keep end-of-life product pages on our site so you can see the recommended replacement, and we can help plan a phased swap that does not disrupt your sites.
Choosing hardware with security in mind
When you buy, it is worth choosing manufacturers that publish regular security updates, support their products for many years and offer a remote management platform. It costs little at the start and saves a lot later. See our IoT and OT security hub and our remote management guide for more.
Frequently asked questions
How often should router firmware be updated?
Check for updates regularly and apply security fixes promptly. Many organisations review firmware monthly or quarterly and act straight away on critical security releases.
Can firmware updates break a router?
Rarely, but it is why you test on a few devices first and update in batches. Remote management lets you confirm each router comes back online.
What if the router is end of life?
It will not receive new security fixes, so plan to replace it. Our end-of-life pages show the recommended replacement for each model.
Need help with your project?
Talk to our UK technical team about the right router, SIM and antenna.