先列出小米路由器的无线硬件配置。

root@XiaoQiang:/etc/init.d# uci show wireless
wireless.wl0=wifi-device
wireless.wl0.type=broadcom
wireless.wl0.channel=0
wireless.wl0.txpwr=mid
wireless.wl0.hwmode=11ac
wireless.wl0.hwband=5G
wireless.wl0.autoch=2
wireless.wl0.bw=0
wireless.wl0.disabled=1
wireless.@wifi-iface[0]=wifi-iface
wireless.@wifi-iface[0].device=wl0
wireless.@wifi-iface[0].ifname=wl0
wireless.@wifi-iface[0].network=lan
wireless.@wifi-iface[0].mode=ap
wireless.@wifi-iface[0].ssid=Test_5G
wireless.@wifi-iface[0].key=test2009
wireless.@wifi-iface[0].encryption=psk2
wireless.@wifi-iface[0].hidden=0
wireless.wl1=wifi-device
wireless.wl1.type=broadcom
wireless.wl1.channel=0
wireless.wl1.hwmode=11ng
wireless.wl1.hwband=2_4G
wireless.wl1.autoch=2
wireless.wl1.bw=0
wireless.wl1.txpwr=min
wireless.wl1.disabled=0
wireless.@wifi-iface[1]=wifi-iface
wireless.@wifi-iface[1].device=wl1
wireless.@wifi-iface[1].ifname=wl1
wireless.@wifi-iface[1].network=lan
wireless.@wifi-iface[1].mode=ap
wireless.@wifi-iface[1].ssid=Test
wireless.@wifi-iface[1].key=test2009
wireless.@wifi-iface[1].encryption=psk2
wireless.@wifi-iface[1].hidden=0
wireless.miwifi_ready=wifi-iface
wireless.miwifi_ready.ifname=wl1.3
wireless.miwifi_ready.network=ready
wireless.miwifi_ready.encryption=none
wireless.miwifi_ready.device=wl1
wireless.miwifi_ready.mode=ap
wireless.miwifi_ready.hidden=1
wireless.miwifi_ready.ssid=miwifi_ready

设置国家无线代码，用法是查看这个WiFi硬件代号 wireless.wl0=wifi-device 从上面可以看出小米的2个无线，2.4Ghz是wireless.wl1，5Ghz是wireless.wl0

• # uci set [无线的硬件代号].country=US

root@XiaoQiang:/etc/init.d# uci set wireless.wl1.country=US
root@XiaoQiang:/etc/init.d# uci set wireless.wl0.country=US

root@XiaoQiang:/etc/init.d# uci show wireless.wl0.country
wireless.wl0.country=US

root@XiaoQiang:/etc/init.d# uci show wireless.wl1.country
wireless.wl1.country=US

顺便把默认的隐藏WiFi关闭算了，减少潜在风险。

root@XiaoQiang:/etc/init.d# uci set wireless.miwifi_ready.disable=1

然后提交保存，重启硬件生效配置。

root@XiaoQiang:/etc/init.d# uci commit wireless

root@XiaoQiang:/etc/init.d# /etc/init.d/network reload