Hello. I made a app and load to google play. I’ve released the app’s update. But even though I make a little change, he downloads all the apk from the start. How do I make it possible to upload only the files I made changes?
You can’t.
The only thing you could do to minimize the impact is to put your assets on assetbundles and host these files yourself, that way minor changes in code wouldn’t require a full download of the assets, but I don’t think that’s a free solution.