inputs.text: great unit maps hard update buyer beware - perfect fit 2010 chevy silverado hookups exact match truck fit finish perfect unit really oehem issue gps maps would really like upgrade thehem struggle find company provides mapping software even tougher find software radio good news maps fairly date gps mapping function works flawlessly original review stands update 1year tried update software reply got naviextras customer support regret inform sent license not valid seehem become victim software piracy license used lot cracked software illicit not provide support important not possible legalise cracked license generated individually device also cannot replace cracked software version purchase software not sell navigation software endusers software available preinstalled devices supported naviextrascom wish update contents naviextras need possess supported device unfortunately cannot purchase navigation software present device no legal license issued end naviextras support buyer beware