To install, you must first unlock your device’s bootloader. Thankfully, with Nexus 7, that is an easy process. You first run the Nexus 7 Ubuntu installer, which of course right now requires you to install Ubuntu. You can do this without installing Ubuntu on your PC by using a Virtual Machine (VM) with the free VirtualBox software. The VM deployment of Ubuntu can pass through USB 2.0 devices, but make sure you install Oracle’s VM additions as well as VirtualBox.