I helped a buddy update his Uniden GPS (Trax350). Simply follow these steps and you should be done.
Uniden's MapTrax350 GPS device accepts voice-command programming and provides detailed audio
commands, as well, speaking aloud the map directions that are displayed
on its screen. Keeping your Trax350's firmware updated is crucial to
keeping it working correctly. Usually, you can go to a company's website
and download the latest software, but with Uniden, you must register
your product first to access the proper free upgrades. It takes minutes.
Instructions
things you'll need: USB cable
1 Navigate to the link in the Resources section and fill in the required fields. Click on "Register."
2 Turn on your device and connect it to the computer using its USB cable.
3 Log in to the site with the password that was sent to your email address after you registered the device.
4 Choose "Software Upgrades." Select the MapTrax350 device, and the latest firmware upgrade will appear. Click "Download."
5 Select "Save File" and choose a location on your computer to save it to. After it has downloaded, double-click the program icon, select "Run" and follow the prompts to update your Trax350.
Good luck!
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