This definately isnt fake i used it to unlock my v630(which has w660 firmware)
i generated a w660 unlock patch from the main firmware(mbn)
This worked fine with Far manager(with jdflasher plugin). But it didnt work with at all with setools lite. Far manger is better for patching!!
you can unlock any cid49/51/52 - db2010 or db2020 as long as you can find a working unlock patch and apply it with far managers jdflasher plugin
i have no clue about db2012 tho...