Yes, your PS4 can download games in rest mode — here's how to do it

A PS4 can download games while it's in rest mode. PS4 games can also update while your PS4 is in rest mode.

Can you use a PS4 controller on a PS5? Yes, here's how

To use your PS4 controller on a PS5, connect it to the PS5 with a USB cable and press the PlayStation button on the controller.