Oh yeah I mean downloading the whole game again, so where do you usually find the save file?Game takes a while to load/start, especially on lolphone. Leave it there for a min or 2 (way more on lolphone), if nothing happens, it's your PC (or jokephone). If you don't even see the splashscreen, that's another problem
You don't "update" > you get the entire game back every time a new build gets released. And yes, you can keep your saves (if you know where to save and not abuse junk outdated mods)