I have a OLED switch with a modchip. My current firmware is 19.0.1 and my AMS is 1.8.0. I want to play some games that require a higher firmware. I only play in CFW. Do I need to update both the OFW and CFW or can i just update CFW? Should I update all the way to 21.1.0 or can i go to 20.5.0...