Despite the sometimes somewhat negative reports here and elsewhere, I bought a Harmony 525 - and I'm thrilled! Unpacked (a cutter works wonders), new batteries pure (attached), read instructions (to help), Exact terms of my devices listed, Harmony connected via USB, install software, clicked through guided menus, updated firmware automatically, obediently the model names typed, some waited until the configuration was transferred to the Harmiony, marked USB and the living room => lo and behold, everything works perfectly -. Duration approximately 30 minutes, including unpacking A star deduction there for the keyboard layout and for the piano lacquer (as would be the detective about the perfect fingerprints ;-)) Who can even set up his cell phone, access, who already has difficulty with Windows rather leave may steer clear of it ...