COMPLETE DETAILED VIDEO TO UNLOCK DEV MODE IN WP : youtu.be HEAD HERE TO DEVELOPER UNLOCK YOUR WP DEVICE FRO FREE!! forum.scubix.com This is My Nokia Lumia 800, which i bought on 31st January, 2012. Its been hardly a week with the phone, nokia did confirm battery backup in updates will be long lasting and they were right. The update has brought better performance to the phone and also a very good backup. Now to the developer unlock part, developer unlock is normally charged by nokia to unlock the phone, but i managed to do it for free by some research. Now i can install most .xap files on my lumia and also customize the tiles with backgrounds. Also can add custom ringtones. For now..enjoy this…later on games and more.