Installing OpenWrt on the Xiaomi 4A, 4C, 3Gv2, 4Q, miWifi 3C and debrick method OLD VERSION - YouTube
GitHub - Baumgartl/openwrt-xiaomi-mir3: OpenWrt with support for the Xiaomi Mi WiFi Router 3 a/k/a MIR3. Based on current stable release v18.06.2 with Linux Kernel 4.14.95.
Xiaomi Mi Router AX6000 launched with 7 antennas, Wi-Fi 6 support