Record the process of flashing the millet router 4A Gigabit version to openwrt

Original link: https://nicksxs.me/2023/05/21/%E8%AE%B0%E5%BD%95%E4%B8%8B%E6%8A%8A%E5%B0%8F%E7% B1%B3%E8%B7%AF%E7%94%B1%E5%99%A8-4A-%E5%8D%83%E5%85%86%E7%89%88%E5%88%B7%E6 %88%90-openwrt-%E7%9A%84%E8%BF%87%E7%A8%8B/

I sent a Mi Router 4A to a broadband at home in Shaoxing before. The original Mi Router 3 was disconnected and unstable for some reason, and it only supported 100M. I used a 200M broadband here, which felt wasteful, so I moved this idea, but there are still quite a few pitfalls. First, I saw an article that was written in more detail.
This is what I saw

This article is reproduced from: https://nicksxs.me/2023/05/21/%E8%AE%B0%E5%BD%95%E4%B8%8B%E6%8A%8A%E5%B0%8F%E7% B1%B3%E8%B7%AF%E7%94%B1%E5%99%A8-4A-%E5%8D%83%E5%85%86%E7%89%88%E5%88%B7%E6 %88%90-openwrt-%E7%9A%84%E8%BF%87%E7%A8%8B/
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