From CheatDonar | Jul 11, 2006
1. Turn on the gameboy with a game pak inserted
2. As the letters are being flinged to the screen, press START + SELECT
3. You should hear a sound and the Nintendo(R) will disappear. The game pak will not start.
4. If you want to play the game, press a direction on the + control pad, A, or B. The logo will reappear with a sound and the game will start.
The was only tested on a GBA SP
The cartridge MUST be an advance.
This was probably programmed in because of "Single Game Pak" games. The manual doesn't tell about this, but also says you must have a pak in when you turn it on (you don't - The NINTENDO will glitch on Adv. and Color.)
© 1998-2008 EggHeaven. UPD: 12-May-08