You may also:
1. don't copy the 2577 directory to your SD at all (make sure no old ones left there)
2. rename the application.dat to iGO8.exe
3. click the iGO8.exe and enjoy (no installation at all)
4. drive safely
I still have one question though. How do I get the program to appear in Programs? At the moment I have to go into File Explorer to find the program and run it.