Hi to all of you who have an M3 DS Simply and can't play Daigasso! Band Brothers DX on it! I found a solution to that problem... Just download the two files below and then you can play your game without any limitations Custom _DS_MENU.DAT: http://www.mediafire.com/?gc2qbydy2sb Empty 8mb save file: http://www.mediafire.com/?ncjglztbmwn Guide: 1) Put _DS_MENU.DAT on the root of you microSD card (overwriting old _DS_MENU.DAT). 2) Rename Daigasso! Band Brothers DX (J).sav according to your rom filename and put it at the same folder with your rom (overwriting old .sav file). How did I create the custom _DS_MENU.DAT file? Here is a tutorial: 1) Download latest R4DS firmware (1.18) Link 2) Download Yasu's R4 Kernel Customizer Link 3) Download M3S/R4 Firmware Exchange Link 5) Patch your _DS_MENU.DAT with Yasu's R4 Kernel Customizer. 6) Patch your _DS_MENU.DAT with M3S/R4 Firmware Exchange. You are ready to go!