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.
How To Configure Mi Wi-Fi As Second Router To Extend Existing Network–Same SSID Roaming - NEXTOFWINDOWS.COM
Original Xiaomi Mi WiFi Router 3 4 Antennas 1167Mbps 128MB Flash ROM