I am currently considering installing #OpenWRT on my network gateway router. (It supports #IPv6 but does not give a UI for configuring incoming traffic rules, and blocks all incoming connections. I want to change this.)
I've previously installed OpenWRT before on a discardable device, and it's now happily acting as a WiFi AP and wired router for my office. So this isn't my first rodeo. I'm still worried about the risk, although it's actually fairly low. The device has emergency recovery, and can be reinstalled to the stock firmware with this method.
But what if I break it...

