hey developers how to update ur game from the latest update that u released with chest??? do i have to download again the game?? or theres a way to update it and still have ur save file?

You have to download it again. Your previous save won't work.

thanks and how to have fast fps?? i need it so badly. i only use a laptop than a computer. so any tips?

You can use your old saves when you update the game.

Go to the games files of the old version of the game and copy the files:

level0.reS
level1.reS

Then put them into the files of the new version and your world should be there! This worked for me, I hope it works for you!

But how do you go to the game files?