wifi router needs rebooting every 30 min.

[tomwinch]

router needs rebooting every 3o min. or so.  how do i upgrade?

[plemans]

it might be the router. it might be the modem. 

its good to figure out where the problem is. 

If its happening every 30 minutes, I'd hardwire into the modem and run it direct for a period to make sure it isn't a modem issue. 

You can also try reinstalling the firmware to the router, factory resetting, and then re-installing it. Reason I say re-install the firmware is a reset only clears out old settings. If something was corrupted it in, a firmware reinstall is what's needed. 

Also, its tough to tell you what to buy when you gave us nothing to go off. 

Budget?

sized home? 

how many devices?

streaming/gaming/ what are you using it for?