http://navmanunlocked.wikispaces.com/Unlock - тут опись процеса анлока, ниже цитата язиком оригинала:

"Windows XP: Make sure ActiveSync is installed on your PC.

Connect your Navman by the USB cable to your PC.

Step 3. - Installing the Unlock hack.
Please start the Navman Unlock setup program on your desktop computer.

On the Navman device you may be asked about the installation location. Please make a double tab to the "Navman_xxx_Unlock.CAB". You will be asked to override it - answer [Yes]. (The .cab file will be removed by the install process later on.)"
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