Chromebooks are among the better-documented and more open hardware platforms. The document above indicates how to disable firmware write protection both within and without the operating system.

It also includes this quote:

> Since the start of the project, the Chrome OS team strongly believes that when someone buys a device, they own it fully. ... To that end, we strongly believe that users must be free to fully program their device in any way they want.

Can you point to any ChromeOS devices that have violated this principle?