


– To install this modified BIOS from a bootable USB drive, see the instructions here. This modified BIOS will also enable advanced settings and improve battery life under macOS. Install the modified BIOS version 1.46 to remove the whitelist check and permit the installation of a Wi-Fi card compatible with macOS.Please use our contact form if you find anything that isn’t accurate. See the guide here to dual-boot OS X and Windows See the ThinkPad X220 Mojave guides here 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.
