Home Forums Networks & Cross-Platform Networking Reboot Your Router to Stop Malware

What I’m missing from this and similar articles, is how would I know if my router is infected? That should be testable.
And what about the older routers that haven’t seen firmware updates in many years?
My ISP-supplied ISP-custom DOCSIS 3.0 router-modem has no user control for checking or updating the firmware anyway. I can only see the cryptic versioning on the information page, and a current 25-day uptime.
Enough people have a crappy connection that has to be rebooted sort-of regularly, are they already safe? How does a reboot help anyway (wouldn’t the malware continue after reboot)?
The reporting is a bit thin, if I may say so.