Hi, I have a MacBook Pro M1 that I'm trying to boot development kernel. The SW version is: ProductName: macOS ProductVersion: 11.4 BuildVersion: 20F71 I follow /Library/Developer/KDKs/KDK_11.4_20F71.kdk/KDK_ReadMe.rtfd/TXT.rtf and disabled SIP and authenticated-root. I also copy over the kernels to a livemohnt and update nvram: nvram boot-args="-v kcsuffix=development" Despite above changes, after reboot, I still don't see the OS booting using development kernel (sysctl kern.osbuildconfig shows I'm still running release.) Anyone has any luck to enable development/debug/custom kernels on Big Sur?