How to Do the Hacking
Now, that you know why you would want to mess around with your unit, it’s time to learn how. The first thing that you want to do is plug your Nextar GPS unit into a computer that operates any version of the Windows operating system. You also need to make sure that your unit has ActiveSync installed on your PC. This will help you transfer files from your computer to your GPS unit. If you do not have ActiveSync installed on your machine, you can download this software from the Microsoft website for free. Just be sure that you do this first before you start trying to transfer programs to your unit.
When you plug in your device, it should come up to the music/gps/settings menu on your computer. This means that your computer recognizes the device, and it also means that your ActiveSync is working. Next, you will have to change the path of the MP3 program within \ResidentFlash\DShell\mshell.ini.
Originally, the MP3 dialog box would display the following path: \ResidentFlash\DShell\X3_Chirper\X3Player.e, but you need to change this to \Windows\explorer.exe. Once you have done this, you will have to reset your machine. You cannot just turn it off; you will have to do a hard reset. Hold down the on/off button until it shuts off, and then hold it down again until it comes back on.
When the machine comes back on, try to start the MP3 player. You should now have a Windows task bar on your machine. Next, you next need to load some type of mobile task manager. There are several free ones on the Internet. Just find one that you like, download it to your computer, and sync it with your GPS device. You should install this file in the ResidentFlash folder. This will ensure that it comes back up when you restart your unit.
Finally, terminate the DShell.exe process in your Nextar Menu System. Everything should now work properly and you now know how to hack Nextar GPS units.