I'm currently thinking about/looking up details of what exactly needs to be done when going into and out of sleep mode. It definitely is possible, and we are a step closer now with this new menu.@Gericom That looks excellent! This is one of the most exciting projects going on in homebrew. Thank you so much! Right now the only thing really missing from your project is automatic sleep mode when the 3DS / DSi is closed. Will that be challenging to implement?