Re: unable to connect to wifi after update
I really hate saying this, but I think your next step is a clean OS reload. See what others think.
If you reload the OS, test before you restore. If all is well, then restore. If problem returns when you restore, you may then want to reset to factory defaults. Make preparations for that possibility in the way of selective restore, saving or backing up databases by other means than just with Link, and so forth.
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