Gps update
You go to the Nextar web site, and usually you have to register, then you connect up your GPS, to the PC via USB cable, run the software and then you will be able to download anything you wish from their web site onto your GPS.
Music from itunes will not play on the device
The Itune music files maybe in MP4 file format.MP3 players can only play music files in mp3 file format.You can download mp3 music files from the Internet toyour computer and then copy them to your MP3 player using the USB cable.For your CD collection, you need to convert your CDs tomp3 music files onto your computer or download them from the Internet and thencopy them to your MP3 player after you have connected the USB cable tothe MP3 player and the computer.You can do this using Windows Media player and Rip the CDs - Media Player willcreate a MP3 music file for each music track.Click on this link for instruction on converting musicfiles to mp3 file format :-
http://www.fixya.com/support/r5798418-creating_transferring_mp3_music_files
My headphone slot won't work
so long as you are not plugging in a headset(mic/phones) into it. those have different connections on them which dont line up and short out. yours needs a 3 connector plug ie standard TRS 3.5mm stereo.
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