Do not waste time on random forum links. go straight to trusted sources. The most common, stable version as of this writing is or 14.20.017 . Google exactly:
First launch may take extra time to load databases. After that, connect your vehicle with a compatible J2534 interface. how to download techstream in 5 minutes
There are two primary ways to get Techstream. Your choice depends on your budget and technical comfort: Do not waste time on random forum links