#KEXT UTILITY HACKINTOSH UPDATE#
Update the BIOS with the official Lenovo BIOS version 1.40 available here: Windows 1.40 Update Utility or Bootable 1.40 CD Image.Please use the contact form below if you find anything that isn’t accurate. See the guide here to dual-boot OS X and Windows
#KEXT UTILITY HACKINTOSH INSTALL#
ThinkPad x220 OS X 10.10 Yosemite Installation Guideįollow these steps to install OS X 10.10 Yosemite on your ThinkPad x220 or x220 Tablet.