Hi NigelF: Our IDSA team released an updated version of IDSA earlier this week on Tuesday December 5th. This newest version is 18.104.22.168. and has some UI enhancements and fixes to stop the looping back to the install page that some users were experiencing.
Some users systems may have customized drivers pre-installed by the computer manufacturer, so that may be why you were directed to the Asus site for driver support. Our IDSA v3.1 application can still be utilized to scan systems for any drivers supported by Intel but also provides system information to users (which v3.0 did not offer). The scan will not offer driver updates if the system detects customized drivers installed by the computer manufacturer.
Monique with Intel Corporation