https://blog.wongcw.com/2021/01/27/%e7%b6%93%e6%ad%b7%e9%9d%9e%e5%ae%98%e6%96%b9%e6%94%9d%e5%83%8f%e9%a0%ad%e7%b6%ad%e4%bf%ae%e7%9a%84iphone-12%e6%88%96%e8%a2%abios-14-4%e5%bd%88%e7%aa%97%e8%ad%a6%e5%91%8a/