Instructions have been updated for clarity's sake. Make sure to check the NeoGeo section.
https://www.arcade-projects.com/thr...s-latest-firmware-menu-and-instructions.5101/
https://www.arcade-projects.com/thr...s-latest-firmware-menu-and-instructions.8450/
You can also download directly from here: https://www.mediafire.com/file/exr7nsuny0an38h/Neo+Geo+-+Multi+MVS+++AES+-+Guide+v2.3.pdf/file
https://www.arcade-projects.com/thr...s-latest-firmware-menu-and-instructions.5101/
https://www.arcade-projects.com/thr...s-latest-firmware-menu-and-instructions.8450/
You can also download directly from here: https://www.mediafire.com/file/exr7nsuny0an38h/Neo+Geo+-+Multi+MVS+++AES+-+Guide+v2.3.pdf/file