I had this issue, I updated the firmware / kernel and to a version that supports homebrew games. Searching your R4 chip's model should come up with some answers.
Try running it with hbmenu: https://github.com/devkitPro/nds-hb-menu/releases
Try running it with hbmenu: https://github.com/devkitPro/nds-hb-menu/releases