Q: Keep receiving error message 3014 when attempting to restore iPod

That error is covered here:

If you see Error 3194, Error 17, or 'This device isn't eligible for the requested build' in iTunes - Apple Support

Error 17

Error 1639

Errors 3000-3020

Error 3194

Errors 3100-3999

This device isn't eligible for the requested build

Your initial post never said "followed all the 'official' guidance".

You just this nebulas statement "Having read some tips on here I have disabled my Firewall, logged in and our of my iTunes account, tried using a different internet connection and repeatedly attempted to restore, all with the same result.".

- Make an appointment at the Genius Bar of an Apple store.

  Apple Retail Store - Genius Bar

https://www.apple.com/retail/geniusbar/