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Solved
Is my 13-month-old RBR50 bricked?
Last night we had a brief power outage - for a couple of seconds. I lost internet connectivity and expected things to come back as normal after everything rebooted. However - my RBR50 did not. ...
Well, after connecting to the internal serial console and fiddling around with the U-Boot loader for an hour I managed to unbrick my router and upload the latest RBR50-V2.7.1.60 firmware. Yay!!! :smileyvery-happy:
Serial port fun
The router had lost almost all of its configuration state - including it's MAC addresses, hardware id, model id, etc.
I needed to set these to back sensible values be able to bring up the TFTP loader and load/flash an image. (luckily the error message saying that the image file didn't macth the hardware ID told me what values I needed to configure!)
Then it took a couple of reboots to come up happy. Still had a bogus SSID and unknown passphrase (so the iPhone app was useless) - but at least I could log in on the LAN port and manually set thing up.
Now it seems to be happy I will see if I can find my configuration backup file ;-) (you know, the one you always make but have never tried restoring!)
Time for a beer!
Try a different power adapter, say one from the RBS if you have one. Use same voltage and amps adapter.
If this and TFTP fails, then the RBR needs to be replaced.
Thanks for the suggesition.... I just tried all that again, uising the PSU from my satellite...
Same initial symptoms (no broadcast SSID, no DHCP response on wired ports);
neither the regular factory reset, nor the 30-30 harder reset worked.
The router powers up to a blinking white ring (one fllash every two seconds). Adter a minute or so this changes to a pulsing/throbbing white (once every 3s). It is broadcasting no SSID that I can see. After 5 minutes or so, the ring goes magenta. (This is at least expected -- it's not connected to my cable modem since I'm still using my backup wifi router for internet access)
The symptoms seem similar to other people's reports of failed firmware updates. But the behavior of the power LEDs seems normal - it's just the router doesn't respond on either the WIFI or wired interfaces.
The top ring indication is based on the WAN port connection, router or AP mode. Doesn't give inidiation of wifi problems.
No SSID name of ORBI### seen on any wireless device?
Sounds like the RBR is bad and needs replaced.
That is correct - there is no SSID with ORBIxxxx.
The router label says it should be ORBI77 ... I tried manually associating to that SSID using the password on the label but that didn't work.
There also doesn't appear to be any other SSID that comes and goes when the router is powered on and off.
I'm not sure whether I would expect to get a DCHP address assigned on the LAN ports in the factory reset state. (assuming at least one of those dozens of factory resets wiorked of course!)