Is there a way to update from 2.01 to 2.14 patch for GT5? Since GT6 is out in a month, I was looking to make some hybrids and use them offline. Is there somewhere or somehow to only upgrade to 2.14?
No, each update is downloaded and installed in turn, if you say yes to download 2.15, it will still download and install each update that preceded 2.15. So if you're starting from a base copy of GT5 it will have at least 15 (I don't know how many there will be now) updates to download, and will do them in turn.
If you're going from 2.01 to 2.14 then you will get a set number of updates to download and install 1/x. Just stop after it's installed the second last one, and is downloading the last one. You can manually stop the downloading of it then the game will start up in 2.14.