After resetting the A7, it said there was an firmware upgrade. I clicked on the upgrade but it failed to install. Tried again, nothing. Now I can't even log into the A7 at all. Tried resetting, still

I tried to do the 'upgrade' from the A7 as it asked to do. The upgrade failed and now I can't log into the A7 at all. It does send out a wifi signal. I tried resetting the unit, still nothing. Any ide

My model is an Archer 7, not on the list, version A.5. When I turn off the wifi on the back of the A7, it still puts out a very strong wifi signal called (Hidden Network). I try to connect to it, it w