Is there any way I do this this? I have the original official Pioneer updated installed in it. I am vey hesitant on installing a hack that I found fearingbthatnitbwill brick my system. I have this version. http://www.ebay.com/itm/2012-MAPS-UPGRADE-PIONEER-AVIC-Z120BT-AVIC-X920BT-AVIC-Z140BH-AVIC-X940BT-/130801952466?_trksid=p2045573.m2042&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D27%26meid%3D4173013821447463507%26pid%3D100033%26prg%3D1011%26rk%3D3%26sd%3D320908509160%26