1) Latest version 4.2 Agriculture & Construction and Forestry 2) If buy computer then engineer will be installed software ( 5.2 AG+9.1 CNH or 5.3 CF +9.1 CNH) to the laptop and use directly 3) 2 years warranty 4) Online technical service by teamviewer if you have any issue 5) Real test with John deere and 100% work great