Fon Flash is currently one of the easiest method for installing Gargoyle firmware on compatible routers (Atheros AR231X/531X but not including Ubiquiti routers).
On Windows you will need to first install WinPcap. Vista users may also need to install MSVC++. I am currently working to recompile Fon Flash for Vista, to eliminate this latter dependency, but for now this is necessary for Vista Users.
Download “Fon Flash” from here
Once downloaded double click “fon-flash-gui.exe”
Note: Vista users will need to run as administrator.
For Gargoyle select “openWRT/Gargoyle”
Select the network interface card which is plugged into your gargoyle router
Routers like Meraki Mini require