Extract the file with WinRaR or 7zip. Download and install WinImage, insert a blank 8GB sd card into your pc. After installing WinImage double click on the extracted NSDN-W60 file to open it, click "Disc" and select the drive letter assiciated to the SD Card. Click "Disc" once more and select "Write Disc." When its completed insert the card into your deck to restore the functions.