Unbricking Archer C6/A6 v3.x

I bricked my router (due to my own doings) and have set up a UART-USB connection using my flipper zero, but it's just reading garbage. I set the baudrate 115200 and 8N1, but none of the bytes read are human-readable.

The power led turns on and stays on for about 10 seconds, then turns off for a second. Then all leds turn green, then one of them turns orange, and then it's back to having the single green one.