If you are setting up this specific card, keep these hardware constraints in mind: MicroSD Capacity

. It is not compatible with SDHC or SDXC cards (4GB and higher). Console Compatibility : This card works on the Nintendo DS

R4 Revolution for DS (v1.18) is the final official firmware for the original R4 flashcard designed for the Nintendo DS and DS Lite. Because the original manufacturer's website is no longer active, you can find the firmware files archived on platforms like the Internet Archive Key Specifications & Limitations