For the log_1 path, you want to use the full path to your main NextGen directory. It's probably very different in Android that it is in WinCE. So use ES File Explorer or some other root-capable file explorer to find out where your main NextGen directory is (same directory where sys.txt is) and use that for the path in the log_1 line.
Sorry I don't have more exact answers for you - I just have never used iGo products on Android (yet).... Someone with more Android-based experience may be able to provide better info.
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