Kernel V1.18 has never been updated ever since Apr 24th, 2008, and it does not support most new ds games. Here will guide you to set up Wood R4 kernel below.
Download latest Wood R4 kernel into your computer, decompress and extract this Wood R4 v1.6x.rar file with tool WinRar, get __rpg, _DS_MENU.DAT, changelog.txt, readme.txt shown as below. Copy and save _rpg, _DS_MENU.DAT into the root directory of your memory card. Now, you can plug and play the saved DS games on your memory card.