1, First thing you need to do is make a backup of the SD card and put it somewhere safe as you may need some files from it, Then delete all the files from it (Or use a different card, Max 2GB.)
2,
Download Simple Launcher.3,
Download this version of iGO8.4, Extract both archives,
Note: there will be some .zip files within the iGO folder, Do not unzip these!
5, Read the instructions included in Simple Launcher.
6, Rename RenameMe.exe and RenameMe.mscr to vdoservice.exe and vdoservice.mscr
7, Copy vdoservice.exe, vdoservice.mscr and Mortscript.exe to the root of the SD card. (Max 2GB)
8, Copy the iGO folder to the SD card.
9, Retrieve the sys.txt from the backup and open it with Notepad, look for the [gps] section, note the port and baud numbers.
10, Copy these numbers into the sys.txt section from the newly downloaded iGO.
11, Insert card, Reset device and if all is well a file explorer will appear, Navigate to the iGO 8.exe and tap OK.
12, iGO 8 should start but there will be no content, but we'll sort that, just get the app working first.
Report back...