XP allows you to update the software on the remote control, headphones, and search coil. As with the Equinox, you first download the update to your PC from the XP website, then apply the update to the various components. All elements of the Deus must be updated, the headphones, remote, and coil.  They will not communicate properly with one another if you do not update them all. As of now, you cannot update the Deus using a Mac, it can only be done on a PC with Windows. The latest update for the Deus is Deus 5.21 Update. A lot of newly manufactured detectors will come with the latest update.