where to download Launch X431 X-prog3 PC software and how to activate PC adapter or Standalone device https://www.obdii365.com/wholesale/launch-x-prog3-pc-adapter.html X-prog3 PC adapter and X431 standalone programmer use different PC software, visit x431.com, go to Download area, download corresponding software. Both devices require activation. Standalone programmer https://www.obdii365.com/wholesale/launch-x431-ecu-tcu-programmer.html Windows 10 and Windows 7 installation is slightly different. For Win7, follow instruction here http://blog.obdii365.com/2023/07/20/download-and-install-launch-x-prog3-pc-software/ Social Media Facebook: https://www.facebook.com/obd365 Twitter: https://twitter.com/obd365 Whatsapp: +86 18150118226 Contact Email: [email protected] Skype: OBDII365.com