Befw11s4 Dead Radio - LEDs not lit, no signal - help!

Question

Hi Linksys,
I've got several Linksys devices, including a G-router, and they're great.
But that's not what I'm writing about today....
In short: I fiddled with the WiFi in a vacation rental house, and I think I broke it.
The long:
I'm renting a house on cape cod, and they have a befw11s4 wifi router.
When we arrived, it was working. But since the SSID was broadcast as
"linksys", I was worried about privacy. So I logged in using the default
password "admin", and discovered that it was a typical default situation.
So I decided to turn on security for the week, then I'd turn it off. No
big deal, right?
Unfortunately, after turning on WEP security (it doesn't seem to have
WPA), the radio went dead. So I did a factory reset from the button, and
that didn't help. Then I hardwired with cat5 and did a factory reset
within the admin interface, and the radio is still dead. By "dead", I
mean that no SSID shows up at all. And the WLan lights (WLAN Activity,
WLAN Link) do not light up - ever. The setup screen looks like this:
Wireless: [x] Enable
SSID: linksys
Channel: 6
WEP: [x] Disable
Here is a screenshot:
http://www.thornsoft.com/Misc/linksys_setup.JPG
I've tried disabling/enabling the wireless, changing the SSID, switching
channels. I also have analyzed the WiFi with my spectrum analyzer
(doesn't everyone have one?) and it shows no radio signals in the 2.4Ghz
band, aside from my own Linksys router on channel 3, which I'm currently
using as an access point (I brought it in case the one in the rental unit
wasn't able to be secured!) Aside from my traffic on ch3, there's nothing
going on, including microwave ovens, baby monitors, etc... And I've tested
as close as 4 feet from the device.
Here's a screenshot, showing absolutely no traffic on ch6. You see my wifi router on ch3, but the one that I'm trying to fix is on ch6.  Nothing, zilch, nada:
http://www.thornsoft.com/Misc/linksys_wifi_spectrum.JPG
Any ideas? Would upgrading firmware help? It's currently at 1.44.2z. I
don't know the rev of the device, as it's bolted to the wall.
Let me know what you think. If I've broken the radio, I'm just going to
install my router in place of theirs, and leave it behind. I'd rather buy
myself a new router than risk my $400 cleaning deposit...
Thanks,
Chris Thornton

Answer 1

Thanks for the reply. 
This router is "rev 0" I guess, as it doesn't indicate a rev with the model number. So I'm already at the latest firmware for that rev (1.44.2z). 
I re-flashed it anyway, just for kicks.  Reset switch, then power off for an hour.  Radio is still dead. 
We're going to scrap it, switch in my working WRT54G, and the owner of the house is going to re-imburse me. I'll probably pick up a new WRT54G when I get home.
Anyway, it would be really helpful if you could indicate whether these radios do just quit, out of the blue like that.