Changes

* First, ensure that your laptop is [http://wiki.laptop.org/go/Activation_and_developer_keys unlocked].

* First, ensure that your laptop is [http://wiki.laptop.org/go/Activation_and_developer_keys unlocked].

* Download <tt>'''osNdx2.zd'''</tt> to the root directory of a USB stick

* Download <tt>'''osXXXXX.zd'''</tt> to the root directory of a USB stick

* Drop to the "ok" prompt by pressing ESC repeatedly during boot

* Drop to the "ok" prompt by pressing ESC repeatedly during boot

* Type the command: <code>'''fs-update u:\osNdx2.zd'''</code> followed by ENTER

* Type the command: <code>'''fs-update u:\osXXXXX.zd'''</code> followed by ENTER

* Wait for the display to fill in with color and the "'''ok'''" prompt to return

* Wait for the display to fill in with color and the "'''ok'''" prompt to return

* Type the command <code>'''reboot'''</code> followed by ENTER

* Type the command <code>'''reboot'''</code> followed by ENTER