MacOS BigSur 为什么还是不能看 Netflix 4k？

[blues9]

电脑是 MacBook Pro (15-inch, 2019)，OS 以及升级到 11.2 (20D64)，Safari 版本 14.0.3，也尝试修改浏览器 User Agent 为网上建议的 OS 11.0，但都不管用，看 test pattern 还是 1080p. 家里网速是没问题的，用 ChromeCast Ultral 可以打开 4k 内容。

大家给点建议？

[Kanye]

我也一样，苦恼着，不知道是不是关闭 SIP 的缘故

[Kanye]

重置 SMC 、NVRAM 、PRAM 有试过吗？

[Wao]

https://help.netflix.com/en/node/55764

To stream in Ultra HD, you will need:

A Mac computer with macOS 11.0 Big Sur installed.

The latest version of Safari browser

Select 2018 or later Mac computer with an Apple T2 Security chip

A 60Hz 4K capable display (with HDCP 2.2 connection if external display).

NOTE: Every monitor connected to your computer must meet these requirements to successfully stream in Ultra HD.
A Netflix plan that supports streaming in Ultra HD.

A steady internet connection speed of 25 megabits per second or higher.

Streaming quality set to Auto or High.

NOTE: 4K Ultra HD support for macOS 11.0 Big Sur is currently in development may not be available at all times.

[blues9]

@Kanye 没有试过，因为电脑平时深度使用，装了很多东西，重装不方便啊

[blues9]

@Wao 除了最后一句模棱两可的要求，其他显性的要求都满足啊。