piwis 3 with latest V39.5 software installed at Lenovo Yoga S1 touch screen laptop, ready to use. Fixed piwis tester 2 could not work on Porsche vehicles after 2017, comes with dual system V38.200 + V39.500 software, supports diagnosis and programming for Porsche old and new cars till 2020. How to swith to developer mode from … Continue reading PIWIS 3 Software Dealer Mode Switch To Developer Mode