So the 3.4 function WWW.LoadFromCacheOrDownload(url, version) takes the version integer. My question is, how do you set the version number when you’re creating an assetbundle?
You just pass in an arbitrary number you pick yourself for version. The point is that when you call LoadFromCacheOrDownload again, with a different version parameter, your data will get reloaded. This lets you control updates to your cached AssetBundles.