We have kernel extension - which works fine after setting the security level to allow 3rd party Kexts. However, we are unable to uninstall the Kext. Tried calling kumtil unload + removing the Kext from /Library/Extensions + reboot. Also tried clear-staging. But the only way to remove the kext from the aux. collection is to use the trigger-panic-medic from Recovery mode. Thanks. Devendra. ps: Note that if we install a newer version - the aux. kext collection gets rebuilt correctly.