Here's your GEEK-steer ...
You should be able to find what you're looking for here
. Select the applicable operating system (OS) and your on your way.
I realize you stated you have a "d4168", and the page states "D4160", but that's your sweet spot. It should cover all incremented versions of 41XX.
The page after you select your OS may have a real-time on-line
checker utility link ("Automatically check to see if you have the latest software and drivers"). Depending on your circumstances, you may find that useful ... but that's your call.
Good luck, and thanks in advance for posting back ...
- to let me (and others) know how things worked out.
- to provide clarification or feedback.
- if you have any further questions.
"Today's the best day of my life...and NOW you're part of it!".
Via con Dios and Godspeed -- Craig