JP-8000: Checking the ROM version April 14, 2023 07:52 Updated Follow Use the following procedure to display the ROM version: 1) Turn on the power while holding down LFO 1 WAVEFORM, #1, and #3. Related articles SP-404MK2: What kind of SD cards can I use? JP-8000: Technical Specifications How do I find/enter my Serial Number? JP-8000: Synchronizing Chorus JP-8000: Initializing the JP-8000 - Restoring the Factory Settings