The Star Fire 1 I believe is the type of GPS receiver. So when opening the files in your computer, it may be possible you have a PFdata folder. If you do see this folder then you are using the original Green Star monitor. When going to the Read Job Data, open the option for John Deere Green Star Data. Then highlight the correct File Type. When browsing select the Drive or Folder that CONTAINS the PFdata folder and Click OK. This will allow the files to display for reading.