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This topic created in 3275 days ago, the information mentioned may be changed or developed.
MAC pro 少时间可以连上 5G WI-FI，但是大部分时间是 2.4G WI-FI，经过检查猜测是系统信息，接口 EN1 里的国家／地区代码的设置问题，请赐教如何修改这个地区码？比如把 CN 改为 US。
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Jimrussell May 13, 2017 via Android  1
各国对 5g 信道的标准不一样的。估计你路由器 5g 信道开了默认的自动，你改成手动指定一个本国标准支持的信道就行了。
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guanaco OP @Jimrussell 是这样，我发现国行的机器，有时也能找到低端的 39 通道，所以怀疑硬件通用，但是被软件锁死。想打开试试。
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Jimrussell May 13, 2017 via Android 1
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goodbest May 13, 2017
挺难改的，我试过各种方法都不行。
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guanaco OP @Jimrussell 不好意思，38 打错了
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shanliang May 13, 2017 1
终端输入
sudo perl -pi -e 's|\x81\x78\x30\x6B\x10\x00\x00\x0F\x85|\x81\x78\x30\x6B\x10\x00\x00\x90\xE9|' /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4360.kext/Contents/MacOS/AirPortBrcm4360 && sudo touch /System/Library/Extensions/ 以上以 brcm4360 网卡为例，需修改为自己的网卡 |
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shanliang May 13, 2017
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shanliang May 13, 2017
<img src="http://i4.buimg.com/588926/c26a5e4d44827510.jpg" class="embedded_image">德国支持的有。如图。。。
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guanaco OP @shanliang 有个奇怪的现象，用 system_profiler SPAirPortDataType 这个命令，在连接不同路由器下显示的不一样。有时显示 Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 149, 153, 157, 161, 165，有时会增加 36，38，40，44。不能理解和路由器的有啥关系。按照这个方法是否可行。https://discussions.apple.com/thread/3656144?start=0&tstart=0
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shanliang May 13, 2017 1
I had a similar issue close to two months ago. My problem was that my router correctly sent SE as country code, but some of my neighbours routers sent GB as country code and from time to time my Air would not connect since it picked up the beacon from one my of neighbours routers. Sometimes event if connected, I still could not reach the internet. Spent a couple of weeks with Apple support and they suggested that I changed the channel of my router (an Airport Extreme Base Station) from Auto to 6 (in Auto ch 11 was used) and since then no more issues with wrong country code being configured.
找到了就这段 |
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ouqihang May 14, 2017
在路由器里面改，电脑一般不用顾忌，都能连，问题是一些分区域销售的可连 5G wifi 的设备，如果改到其他地区而恰好设备的区域不支持，那是直接搜不到，手机同理，不过手机可以根据 SIM 来判断所在区域，自动屏蔽或开放支持的频段。
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eightsheep Oct 15, 2022 via iPhone
想知道国行 iphone 能修改无线区域吗？
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