NUC10i7FNK when installing latest 22.214.171.12485 drivers listed on my NUC's page, I get unsupported platform.
do the old drivers need to be uninstalled, and where can I get the old ones if the new ones do not install?
Yes, you need to uninstall the existing drivers before installing this one. Use this process:
If you want to go back to the previous version of the driver, you can download it from here: https://downloadcenter.intel.com/download/29335/Intel-Graphics-Windows-10-DCH-Drivers.
Hope this helps,