I came across an old Airport Express A1084 recently and wanted to set it up as a bridge to my wired USB printer. My MacBook Pro (OS X 10.7.5) is able to see the Airport Express, but my current version of Airport Utility (6.3.1) insists that I need AirPort Utility 5.6 in order to configure the Express. However, when I attempt to install AirPort Utility 5.6, the install fails. Is my Mac directing me to the wrong version of AirPort Utility? Or what might be the issue?