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Hey guys, I have the problem that my 2013 MacBook crashes frequently since upgrading to Big Sur. This means that all of a sudden the screen freezes, the fans turn up and all of a sudden the MacBook is off. In Catalina, through research I found out that it's because of the Thunderbolt driver (AppleThunderboltNHI.Kext etc.), which I had always renamed in Catalina using recovery mode (... .kext.BAK). This solved the problem. But now since Big Sur I can't rename the Kext files anymore because I'm only in read-only mode. So I wanted to ask here if there is a possibility to rename the files again? Otherwise the MacBook still runs really well!