JX-10: Checking the ROM Version April 14, 2023 09:05 Updated Follow Use the following procedure to check the ROM version on the JX-10: 1) Hold down the H button (under PATCH) while turning the power on. Related articles JX-10: MIDI Bulk Dumps A-01: Factory Reset A-01: LCD Contrast AX-Edge: Downloading Sound Packs / Wave Expansions JX-8P: Copying Internal Patches to a Cartridge