This is how I got it working. To get it working on the DSTT you can download this Firmware. Files you need 1.) YSMenu0903270000 Yasu doesn't want people to download his YSMenu anywhere except his Site. CTRL+F "EZ3in1+ NOR" without the quote marks. 2.) MoonShell 2.06 Stable You can download this here. 3.) DLDI You can get this from Chism's Website. 4.) linoul's YSloader for MoonShell 2 This is a plugin for Moonshell2 which lets you boot ROMs through moonshell2, created by linoul from GBAtemp. You can get this here. 5.) r4denc You get this here. 6.) R4ysauto You can get this here. Installing it NOTE I got the information from another thread but it was scattered throughout the posts, so I made a step by step on how to get it working since some people had trouble working it. I didn't make any of the files I linked to either. This will only work on the (U) version of the ROM. I only tested this on the original R4 (R4 Revolution) so I can't confirm it working on clones. 1.) Extract the Moonshell package to you're desktop. Run the setup tool & intstall it your Micro SD. Run the Language Select tool in the package to make Moonshell English. 2.) DLDI patch "moonshl2_DirectBoot.nds" with the R4 DLDI data. 3.) Extract the "nds.YSloaderForMS2.nds" and "config.ini" files from linoul's package to the /moonshl2/extlink folder. DLDI patch "nds.YSoaderForMS2.nds". 4.) Extract the files of the r4denc package on your desktop. 5.) Cut your R4 DLDI patched "moonshl2_DirectBoot.nds" from the root of your MicroSD to the r4denc directory. 6.) Drag moonshl2_DirectBoot.nds over r4enc.exe. This will produce a file called "moonshl2.nds.DAT". 7.) Rename "moonshl2_DirectBoot.nds.DAT" into "_DS_MENU.DAT". 8.) Copy _DS_MENU.DAT to the root of your card and replace your offcial R4 firmware. 9.) Create a new directory on your desktop called "r4ysauto" without the quote marks. 10. Extract the contents of the r4ysauto package you downloaded into this directory. 12.) Copy the YSMenu0903270000.zip you downloaded into the "r4ysauto" directory. 13.) Run r4config.bat and answer the questions with these answers, Code: Language: EN Flashcart: R4 Overwrite: Yes Skin: No YSMenu Language: EN Ways To Install YSMenu: 4 Automatic Updates: Off 14.) Run r4.bat. This will produce "R4_custom_English.zip". 15.) Extract the files of this archive into the root of your card. 16.) Create a new directory called "ysmenu" at the root of your card. 17.) Move the YSMenu.nds you extracted from the R4_custom_English archive into the ysmenu directory. 18.) DLDI-patch YSMenu.nds. 19.) Copy and paste the Mario and Luigi: Bowser's Inside Story ROM onto the cart. 20.) Remove the MicroSD from the PC and put it in the R4. 21.) Boot up the game obvioulsy. 22.) Due to a bug you can't launch homebrew through YSMenu. You can fix this by downloading this file and placing it in the TTMenu directory.