Following are instruction to perform Model 6200/6500 software update: 1. Download the software installation ZIP file from the web site by clicking on "6400SW_X_XX_XXXX" link. Follow the instructions to save the file into the desired folder. 2. Extract all files from the installation ZIP file onto a memory stick. 3. Insert the memory stick into one of the USB ports of Model 6200/6500 PC. 4. Create a copy of the folder named C:\MAT on Model 6200/6500 PC hard drive. This copy will allow returning to the previous software version if necessary. 5. Copy the MAT6400.exe, Proxies.dll, MATProducts.bmp and Wallpaper.bmp files into C:\MAT folder. Overwrite the existing files in the folder. 6. Copy the _objects.dat and _objects.idx files into C:\MAT\DB folder. Overwrite the existing files in the folder. 7. Return to C:\MAT folder and double click on Proxies.dll to register it. If registration successful then run the MAT software as usual. 8. If the registration is not successful then press Ctrl+Alt+Del, access the Task Manager, Processes, identify the Regsvr32.exe and End this process. Exit the Task Manager and double click again on Proxies.dll to register it. Run the software as usual. 9. Review the latest Software Release Notes for information on the new software features.