2 代google chromecast不工作了， 怎么fix啊？

maggiexiao

网上说Google Chromecast devices have recently experienced security-related issues, primarily impacting second-generation Chromecast and Chromecast Audio devices due to an expired security certificate

A week after many second-generation Chromecast and Chromecast Audio devices stopped working, Google has updates to get all of them back online.

可是为何我家的还是用不了， 时好时坏， 看这看这就SOMETHING WENT WRONG ， 然后不casting了， 哪位高手贴个解决的方法啊。谢啦谢啦。