Stock V15

Careful: the GLO key (A#4, in EDIT) edits the voice; the GLO button opens the global settings.

• OCT- / OCT+: off at 0; slow blink at ±1, fast blink at ±2, solid at ±3.
• HOME: blinking = Bluetooth on but not connected; solid = connected; off = Bluetooth off.
• ENV, ARP, SEQ: on while that function is on. SAVE: on while saving. SEL: on while an effect is grabbed.
• PLAY/STOP: orange when the sequencer is on and stopped, green while playing. REC: red while recording.
• Keys: light while pressed and as the arpeggiator plays. With SEQ on: solid = a note on that step, off = empty, flashing = the step playing. In EDIT, the keys you can pick blink and the picked one is solid.

• Stock V15 has no way to back up your voices or patterns. The FM-1 only sends notes over MIDI, never voice data.
• Back up in the firmware you are leaving first, with its own tool (above). Anything below marked at risk can be written over; whether an older saved copy survives depends on how often you saved, so do not count on it.
• What installing Stock V15 does to the firmware you had before. update mode under stock (installing anything from stock): Reported in Felucca's source comments: stock's own updater stages into the margin above 0xE4FFF (where the Felucca family keeps its autosave and voice bank), keeps a VM backup in the 0xE8000 sector and its update record at 0xE8F00. Exact staging range not documented (only while stock runs an update) [reported]. install (M-VAVE's V15 package): The pinned V15 package contains a program image ending at 0x92FFF, covering Open’s USER projects, preferences, staging and sample header. This program extent is read from its flash.bin directory entry. Whether the closed native loader also formats or rewrites other data remains unknown.
  • Baud Girl FM-1+VA: Possibly at risk (layout reported or inferred): Baud Girl patterns (16, with locks). Carried over: Baud Girl presets (128) (her Virtual Analog and 8-Bit presets will not play on stock).
  • Felucca: Possibly at risk (layout reported or inferred): project slot A; project slot B; project slot C; project slot D; FM6 patches of the FM6 user presets; user sample slot USR1; user sample slot USR2; user sample slot USR3; user presets 1-16; user presets 17-32; the autosave (the music as you left it); FM6 voice bank B1-B32.
  • SLOOP: Possibly at risk (layout reported or inferred): song section A (a whole project); song section B (a whole project); song section C (a whole project); song section D (a whole project); the music in progress (autosave); user sample slot USR1 (header at 0xA0000); user sample slot USR2 (header at 0xB4000); user sample slot USR3 (header at 0xC8000); user sounds U01-U16; user sounds U17-U32; FM6 patch bank B1-B27; user sample slot USR4 (header at 0xE7000).
  • X0X: Possibly at risk (layout reported or inferred): the whole X0X project (settings, sound, all 32 patterns, song, knob motion); break loops slot 1; break loops slot 2; break loops slot 3; X0X button calibration.
  • JIANT: Possibly at risk (layout reported or inferred): song 1 section A (a whole project); song 1 section B (a whole project); song 1 section C (a whole project); song 1 section D (a whole project); FM6 patches of the FM6 user sounds; song 2: four sections (whole projects); song 3: four sections (whole projects); song 4: four sections (whole projects); song 5: four sections (whole projects); song 6: four sections (whole projects); song 7: four sections (whole projects); song 8: four sections (whole projects); which song is current, every song's rows and scenes; user sounds U01-U16; user sounds U17-U32; the music in progress (RESTORE LAST); FM6 voice bank B1-B32.
  • Melodee: Possibly at risk (layout reported or inferred): shared user presets U289-U378; shared user presets U379-U384; shared user presets U109-U126; project A: patterns, song, sounds, motion, recordings; project B: patterns, song, sounds, motion, recordings; project C: patterns, song, sounds, motion, recordings; project D: patterns, song, sounds, motion, recordings; shared user presets U145-U288; shared user presets U073-U090; shared user presets U091-U108; shared user presets U001-U018; shared user presets U019-U036; shared user presets U037-U054; shared user presets U055-U072; shared user presets U127-U144.
  • FoMni: Possibly at risk (layout reported or inferred): FoMni button calibration.
  • AMB-1: Possibly at risk (layout reported or inferred): AMB-1 panel calibration.
  • ChoralRoot: Possibly at risk (layout reported or inferred): 32 imported DX7 voices; CZ-1 bank A (16 tones); CZ-1 bank B (16 tones); CZ-1 bank C (16 tones); CZ-1 bank D (16 tones); CZ-1 bank E (16 tones); CZ-1 bank F (16 tones); CZ-1 bank G (16 tones); CZ-1 bank H (16 tones); last global-save session; favourite marks, chord/bass type and filter; 128 saved sounds with their complete engine patches; recorded loop 1; recorded loop 2; recorded loop 3; recorded loop 4; recorded loop 5; recorded loop 6; recorded loop 7; recorded loop 8; recorded loop 9; recorded loop 10.
  • GHOULBOX: Possibly at risk (layout reported or inferred): project A; project B; project C; project D; FM6 patches for user sounds; user sample slot USR1; user sample slot USR2; user sample slot USR3; user sounds 1–16; user sounds 17–32; music in progress (RESTORE LAST); FM6 voice bank B1–B32.
  • M-VAVE FM-1 Open: At risk when you act: Open USER project 1; Open USER project 2; Open USER project 3; Open USER project 4; Open USER project 5; Open USER project 6; Open USER project 7; Open USER project 8; Open USER project 9; Open USER project 10; Open USER project 11; Open USER project 12; Open USER project 13; Open USER project 14; Open USER project 15; Open USER project 16; Open device preferences; Open shared sample audio. Installing this firmware replaces Open’s sixteen USER projects, preferences and sample header before its first start, including the first 24 KiB of sample storage. This follows Open’s source-defined USER layout and the incoming program range; export projects and device samples before leaving Open.
  • FM-106: Possibly at risk (layout reported or inferred): older stored user bank, if present (Beta4 does not store new edits). A valid user bank stored by an earlier FM-106 build can still be present and readable in Beta4; the bank risks listed here, if any, apply if it exists. FM-106 Beta4’s new user-sound edits are only in memory: panel save, delete and librarian bank commit do not store them, even when they report success. Read the unit into the librarian and export both user banks before switching or powering off; those exports omit sequence notes, locks and extended controls.
  • Hortator: Possibly at risk (layout reported or inferred): project A; project B; project C; project D; user samples USR1; user samples USR2; user samples USR3.
  • OberVave: Possibly at risk (layout reported or inferred): pattern 1; pattern 2; pattern 3; pattern 4; pattern 5; pattern 6; pattern 7; pattern 8.
  • Polly: Possibly at risk (layout reported or inferred): Optional QY70 style bank; All four Polly songs; Polly shared memory 1; Polly shared memory 2; Polly shared memory 3; Polly shared memory 4; Polly shared memory 5; Polly shared memory 6; Polly shared memory 7; Polly shared memory 8; Polly shared memory 9; Polly shared memory 10; Polly shared memory 11; Polly shared memory 12; Polly shared memory 13; Polly shared memory 14; Polly shared memory 15; Polly shared memory 16; Polly button and encoder calibration.
  • Skiff: Possibly at risk (layout reported or inferred): project A; project B; project C; project D; user sounds’ own FM6 patches; user sample USR1; user sample USR2; user sample USR3; user sound bank 1; user sound bank 2; last session; shared 64-pattern pool.
• What the next firmware does to Stock V15's data.
  • Baud Girl FM-1+VA: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock voices (128 user patches, banks A-D).
  • Felucca: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • SLOOP: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock Bluetooth data; stock voices (128 user patches, banks A-D).
  • X0X: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • JIANT: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • Melodee: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock Bluetooth data; stock voices (128 user patches, banks A-D).
  • FoMni: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • AMB-1: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • ChoralRoot: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • GHOULBOX: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • M-VAVE FM-1 Open: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock Bluetooth data; stock voices (128 user patches, banks A-D). The factory-sample write runs by itself right after the Workbench installs Open, before any project save. The source-built V12 bank erases 0x8D000–0x9FFFF without another sample question. The shipped Workbench asset was not compared with the source.
  • FM-106: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • Hortator: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns).
  • OberVave: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock voices (128 user patches, banks A-D).
  • Polly: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock Bluetooth data; stock voices (128 user patches, banks A-D).
  • Skiff: Possibly at risk (layout reported or inferred): stock settings (and possibly patterns); stock voices (128 user patches, banks A-D).
• Who reads whose data. Other firmwares reading Stock V15's data: Baud Girl FM-1+VA reads and uses Stock V15's stock voices (128 user patches, banks A-D). What Stock V15 reads of other firmwares' data: Stock V15 reads and uses Baud Girl FM-1+VA's Baud Girl presets (128) (her Virtual Analog and 8-Bit presets will not play on stock). Everything else of another firmware's looks empty or foreign to the reader.
• Every way each write can happen, for all mapped firmwares: the flash atlas's table. Read in each firmware's source (closed ones: their docs or third-party reports); nothing was tested on a unit.

• Keep the DX7 .syx banks you loaded, so you can send them again later. Write down patterns you care about.
• One indirect way to back up, from Baud Girl's own docs (not tested by us): installing her FM-1+VA keeps your saved stock presets and patterns, and its browser Device Manager can then save all 128 presets and 16 patterns as files. FM-1+VA is closed source; install it at your own risk.
• Coming back to stock from a custom firmware: assume stock overwrites that firmware's data (Melodee's author says so of his). Back it up with that firmware's own tool first. You need M-VAVE's own V15 file from its download page; the installers check it byte for byte and won't take a changed copy.

• Envelope: the older 109-page docs (the ones most people link) say ENV runs 0-8 and pressing ENV again goes Home. V15 runs 0-100%, starts off, and ENV switches it on and off. Those docs predate V13.
• Reset Patches: the older docs say it restores all 128 voices to factory and KNOB 4 confirms. V15 resets one bank at a time, to the voices last imported into it, and turning SELECT right confirms.
• Copying a voice: the V15 booklet says press SELECT to confirm; SELECT can't be pressed. M-VAVE's release notes say turn it, and we follow them.
• Arpeggiator: the product page lists a Bidirectional mode; both sets of docs list Repeat instead.
• Filter resonance: the MIDI document says 0-10; the docs and release notes say 0-100.
• Pages: the SELECT entry talks about pages 1 and 2, but SEQ has three and each operator has six.

Also worth knowing: there are three separate transposes. OCT+/- with ALGORITHM (±12, global), the GLO key's voice transpose (0-48), and SEQ page 3 (±24, the pattern).

Mapped from M-VAVE's V15 docs (31 pages, created 2026-08-20) and product photo on 2026-10-13. Closed source: every line is graded "vendor doc", with its page in stock-v15.json. This is an independent guide written in our own words, not affiliated with M-VAVE. M-VAVE and FM-1 are trademarks of their owners.