The Short Version: My wife’s iPod touch (4th gen) may have a hardware failure. We’ll send it to Apple for repair. None of the various troubleshooting steps I’ve tried have made any difference (see full post for details).
A couple of months ago my wife’s iPod touch was damaged so she replaced it with a new one (both were 4th generation models). I don’t think she used it very much until a few weeks ago when she was unable to connect to the secure wifi network at our house. That evening I fiddled around with it for about thirty minutes but wasn’t able to make it connect.
Last night she tried to use it again, so once again I tried to get it connected to the network. I’ve had to troubleshoot some iPod issue before so this wasn’t an entirely new experience (and I’ve also been using an iPhone for several years).
Nothing worked. Absolutely nothing would make the device connect to the network. And it’s not just a problem with our network. I tried others wifi networks (even attempted to tether it to my iPhone) but it refused to connect.