From MPH to KPH Golden Eagle 2

Hi all, so happy I found & joined this forum, anyway I’m located in Australia & just purchased a golden eagle 2, I’m currently having dramas with the antenna in regards to it not working with the Ant error constantly coming up, besides this when and if I do get it going is there a way to change the MPH to KPH for use in Australia? Any help would be greatly appreciated, thanks