I am using GBA Exploader and playing Ougon not Taiyou - Ushinawareshi Toki (Golden Sun: The Lost Age). There are three ways of setting sleep. Pause menu, Pressing Select + L + R and selecting auto-sleep. The first 2 do not work on EZ-Flash 3 in 1 but do work in VisualBoy Advance. I am waiting to see if the auto sleep feature will work on the 3 in 1. ... Auto sleep does not work either. I had the same experience with Boktai - The sun is in your hand and GBALdr.