Posted: Fri Nov 19, 2021 9:19 Post subject: Archer C9 v1 : Do not use the recent factory-to-ddwrt!
It will brick your router!
I have this device and originally took the 3rd most recent pair of binaries (11-05-2021 r47618). The factory-to-ddwrt binary doesn't work, the router would endlessly reboot.
Use the factory-to-ddwrt from here : 04-05-2016-r29409. Then upgrade with the r47618 webflash binary. Everything seems to work now, WIFI is up (5Gz and 2Gz), the speeds are acceptable (I only have a 100 mbps connection, the 5Gz wifi reaches this speed with no issues). Signal strength is almost as good as the stock firmware.