If you ever want to modify or upgrade your Venturer HPS9308 GPS navigation system, you can easily do so by modifying or replacing the software on the SD Card. However, there are some settings that aren’t obvious and aren’t directly modifiable, so you have to follow a couple things.
It seems like the default Venturer shell, when you choose “Navigation”, looks for SDCard\MobileNavigator\MobileNavigator.exe and runs it. Thus, if you want to replace the software that gets run, you should place the executable at that path. In addition, the GPS device is on port 1 with a baud rate of 4800, at least according to a working config file I found. For reference, that was in SDCard\MobileNavigator\sys.txt with the section