bluechip wrote

On your Basic screen, was the Network Map empty? I did not test, seemed web interface was not accessible, wirelessly.
Were there any Wired and/or Wireless Devices shown on the map and in the tables? I did not test, seems web interface was not accessible.
Which version of Windows were you using? Windows 10 x64
Which browser(s) did you try? IE11
The new firmware seems to be very fussy about browsers.
Did you clear browser cache, history, cookies after the update? No
You were very lucky to be able to go back to an older firmware without the C9 being bricked.
Are you back to 150507? downgraded to 150302
My experience is to be very very cautious about C9 updates after 150507.
Regards and good luck!

kors wrote

Thanks,

All devices failed to connect to internet, including Roku, cellphones... The router seemed connected to internet( blue internet light was on, and not red). I had to hard reset to downgrade. Before upgrading, I put router to factory default, and after upgrading, I manually entered settings.

jamboss wrote

I have having some problems with the 2.4 band on my laptop after upgrading to the latest firmware. What i did was factory reset afterwards and i haven't had any problems since. You could try that.