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After an update a few days ago the internal microphone stoppt working and in the diagnostic it shows "2 ...

https://forums.lenovo.com/topic/findpost/1300/5051537/5192319 You can download this manually and install it.

https://forums.lenovo.com/topic/findpost/1301/5089207/5380069 . Hi SKCHENG, Have you tried directly getting the firmware from the support site?