AVIC-N1 with 24 hour clock

I had an AVIC-N1 and after I updated the software with the N2 version 1.1 software, my clock turned into a 24 hour (military time) clock.  From 1 AM to 12PM the time is normal but from 1PM to 12AM it is displayed as 1300-2400 and so on.  I searched through the menus but I couldn't find a way to change it back.  When the navigation discs were inserted during the military time periods, the time appeared to be normal but as soon as the discs were ejected the time went back to 24 hour time.  Any input on this?2011 Ford F-150 Super-Crew FX4

HU: Pioneer AVIC-Z1

Fronts: Infinity Kappa 682.9cf

Rears: Infinity Kappa 682.9cf

Amp: Profile AP1040

Sub: Pioneer TS-SWX251

There was a glitch like this with the D1 and software 1.0 and 1.1.  Version 1.2 fixed it and was sent out free when you registered online.  Maybe this is similar problem