I find it good hardware, but the original FW leaves much to be desired and is full of security holes. I found the recommendations of installing DD-WRT a vs for an ASUS router but from what I've read it seems to run with many limitations.
Update just found this: https://lede-project.org/toh/hwdata/lin ... ea6200_1.0 Model: EA6200 Version: 1.0 Availability: Available 2017 LEDE Unsupported: image build disabled as of 2017-01-25 Target: bcm53xx Sorry mate. If you really want Gargoyle on it then sell it on ebay and get one that can run Gargoyle.