Windows Phone build tag: 8.00.9805.510.WPMAIN(wpbldlab).20120730-1501

This is a ffu for a RM-821 Lumia 920 device.

Resolution is set to 768x1280.

FFU file was converted from a raw device dump after it was cleaned from user data.

Note: the pin lock could not be removed as part of the cleaning process, as a result you must reset the build to use it.
To do so, press the volume down button at boot, you will see after some seconds some small gears icons showing up on the screen.
Press the following buttons in order::

Volume up
Volume down
Power
Volume down

The phone will then start the reset procedure and you will be able to use it.