I have one in the kitchen attached to a pair of speakers which I'd not used for a few weeks. This weekend I tried to use it again and noticed that I couldn't use Airtunes, looking through the logs a message 'AirTunes time sync receive error:' kept appearing, after a bit of googling, most people seemed to regain function after a firmware update (their units were usually a revision behind the latest version). So I thought I'd try and downgrade then upgrade, but in the process of downgrading to the previous version I appear to have semi-bricked it.

The unit goes through all the usual boot procedure, it appears in the Airport utility, but any attempt to configure it leaves you staring at a 'getting config' message indefinitely. Interestingly enough you can still ping its management address over wifi, but the built in ethernet port is dead, no link. It briefly shows link for about 10 secs during boot but then nothing.

Anybody got any ideas?