Random Shutdown in Big Sur (ThunderboltNHI) driver problem

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!

  • I had the same problem in my MBP Late 2013. I can't get pass the step mount -uw/Volumes/Macintosh HD with or without quotes. Does anybody with the Macintosh HD hard disk name have solved this? Also, somebody suggested a HDMI Dummy Plug; any luck with this simple solution? Thanks

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Does Open Core Legacy Patcher work with mbp 15,1? (2018 Big Sur 11.6.1). I'm having the kernel panic shutdown issue due to AppleThunderboltNHI.kext. I've tried other methods to rename it and create a new snapshot but it crashes in 2-3 mins before anything is complete, even in safe mode and recovery mode.

I heard others were able to disable Thunderbolt and build an installer for older macs using ocpl.