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Discussion Starter #1
On the NTG4.5 comand there is a trick to update the map data.

You have to start with the currently (or previous) installed map installed on a USB, then when it asked if you want to install that version number, switch USB's for the latest map set, and answer "yes".

Problem is, no one seems to have the original installed map set version on a USB. Work around is to buy the upgrade PIN number ($80 - $100) for the currently available map set and then use the trick for free map upgrades after that point.

I paid for my first map upgrade, and have installed one free map upgrade.
 
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