First installation
Your keyboard must be running official firmware 016. Choose the same Pro or Elite model, select Automatic install / resume, then install over normal USB.
CUSTOM FIRMWARE
A little synth.
A bigger playground.
The first custom firmware for SMK-37 Pro & Elite. A revolutionary new way to play, shape, and sequence.
Play right in your browser or connect your keyboard. Expressive sounds, four tracks, and a hands-on Studio that feels like hardware.
This firmware is a beta.
Provided without warranty. Keep a backup of your sounds and settings.
To install:
Connect your SMK directly to the computer by USB and power it on. Open this page in Chrome or Edge.
Close Studio and other MIDI apps, confirm the version, then use the installer below. Do not unplug USB or switch off while writing.
Choose your SMK-37 Pro or SMK-37 Elite. The installer automatically downloads the required official 016 file from a pinned mirror, checks its checksum, and prepares Felucca SMK in your browser. No file selection or upload is needed.
First installation or coming from stock firmware?
Updating Felucca SMK
Automatic install / resume also switches from public Felucca, Sloop, Melodee or Doom with a compatible SMK USB updater. Felucca 0.9.22 and later and Doom updater 007 and later are supported. Earlier private Test11–Test21 builds use a different updater and require a separate migration; this installer will stop before writing to them.
Checking firmware availability...
Automatic download unavailable?
Restore original M-VAVE firmware
Keep USB and device power connected until installation completes. First installation uses your model’s official loader. The prepared package changes application content only. Later Felucca updates enforce application-only writes, excluding calibration, projects and presets.
Installation log
MIDI connection check — collect port names and identity replies without starting an update. Stock Elite/Pro loader trouble? Test the loader handoff without starting the flash-writing stage.
Meet your new custom SMK-37 controls...
Choose a group to highlight the controls and learn what they do.
Knobs
- KNOB BANK off
- Bank 1: knob 1 master volume, 2 tempo, 3 factory preset, and 4 track.
- KNOB BANK on
- Bank 2: knob 1 track, 2 synth engine, 3 factory preset, and 4 page.
- KNOBS 5–8
- Edit the four parameter cards on the current screen in either bank.
- Turn clockwise
- Increase a value or move forward through choices.
Sound pages
- PATCH / HOME
- Return to the mix view and preset browsing. The < and > buttons browse factory sounds here.
- PARA / SAVE
- Open Projects without saving immediately. Knob 5 selects a slot; > saves and < loads.
- FX
- Cycle through effects, extra effects, and performance controls.
- GLOBE
- Tap to cycle through global controls, controls and Projects. Hold to open grouped navigation; K5 selects the family, K6 selects a page, and > opens it.
- ARP / REPEAT
- Toggle the arpeggiator or note repeat and open its controls.
- SCALE / CHORD
- Toggle scale snapping or chord playing and open the corresponding page.
- BT / EDIT
- Tap to cycle the synth editing pages, including FM6 operator pages for FM6 tracks. Hold for Settings; K5 chooses a setting, K6 changes it, and > saves. Bluetooth is not enabled in this build.
Play & record
- SEQ
- Cycle through sequencer setup, step editing, step detail, and automation.
- PLAY
- Start or stop playback. On Song Chain, start the arranged sections.
- REC
- Toggle recording for the selected track. Recording starts playback when stopped.
- PADS / < >
- Use pads for step entry on the step pages; the arrow buttons change the editing position.
- Keep a take
- Recording stays in memory until you save a project.
Keys & wheels
- 37 KEYS
- Play the selected track with velocity-sensitive piano keys.
- OCT− / OCT+
- Shift the keyboard down or up an octave, within the three-octave shift range.
- PITCH
- Bend the note pitch; the wheel returns to its center position.
- MOD
- Apply modulation to the selected sound.
- SUSTAIN
- Connect a sustain pedal to hold notes after releasing keys.
Pads & faders
- 16 PADS
- Play velocity-sensitive notes or enter steps when a step-editing page is open.
- PAD BANK
- Choose the pad bank in Settings to access the second set of pad notes.
- FADER BANK off
- The four faders control levels for tracks 1–4.
- FADER BANK on
- The four faders control attack, decay, sustain, and release for the selected track.
- Illuminated buttons
- Lights show active banks, playing modes, and transport state.
Save & arrange
- Hold PATCH
- Open the preset browser. K5 selects engine or USER, K6 browses, K7 selects ALL or FAV, and K8 adds or removes a favorite. > loads the selected sound.
- Hold PARA
- Open Undo/Redo: > swaps the last sound edit, < swaps the last pattern edit.
- PROJECTS
- Press PARA to open Projects. Knob 5 selects 1–4 (A–D in Studio); > saves and < loads.
- USER PRESETS
- With KNOB BANK on, knob 4 selects User Presets. Knob 5 chooses U01–U32 when expanded storage is available (U01–U08 otherwise); > stores and < loads.
- SONG CHAIN
- Use bank 2 knob 4 to reach Song Chain. > adds a section and < removes one. Save a project to keep it.
- SEQ TOOLS
- Use bank 2 knob 4 to reach Seq Tools. > runs the selected tool; < toggles its one-level undo/redo.
- Before saving
- Stop playback and recording, release keys and pedal, then wait for the saved confirmation.
These are the Felucca SMK mappings. Custom firmware changes what the original panel labels do.
Your Studio. Your style.
Open Studio →Play in your browser or edit your connected SMK
Choose a thumbnail to open Studio in that theme. Every theme also has light and dark modes.
New in 0.9.27
Your SMK, on a bigger screen
Live Panel brings the keyboard's actual screen and controls into your browser. Physical keys and device lights are reflected on the panel, and browser controls operate the connected instrument.
Live Panel
Connect by USB, then use the screen icon to expand the display or return to the full hardware panel. Fullscreen gives the display more room.
Faster screen updates
Only changed areas are transferred. Narrow rectangle updates reduce sequencer traffic, and page changes redraw from the top.
Four clear modes
Live Panel and Device Studio control your SMK. Simulator and Browser Studio play locally. Each mode has an icon and a tooltip explaining what it does.
Live Panel requires 0.9.27 or compatible panel firmware. Device Studio remains available for older compatible firmware. The mirrored display updates progressively; speed depends on USB and the device workload.
From performance to saved project
Expressive playing
37 velocity-sensitive keys, sustain, pitch and modulation wheels, 16 pads with two banks, illuminated controls, and eight mapped encoders.
Thirteen sound engines
Explore the Felucca 1.5.1 engines and factory sounds, including six-operator FM. Shape each track with insert effects, delay, reverb, synced envelopes and LFOs.
Four-track sequencing
Record and edit patterns, add parameter locks, and vary steps with probability, ratchets and timing nudges. A metronome and count-in help you record.
Build a song
Arrange up to 16 sections. Each track can borrow a pattern from saved projects A–D or stay silent, with 1–16 repeats per section.
Shape a pattern
Reverse, shift, clear or generate a sequence, with one-level pattern undo/redo. Sound edits and preset loads have their own gesture-based undo/redo. Drum-lane tools let you work on one lane at a time.
Keep your sounds
Browse by engine or favorites, rename on the device, and sync stars with Studio. Up to 32 device preset slots store your sounds, including FM6 patches. Four project slots keep sounds, patterns, song configuration and settings together.
Live Panel & Device Studio
Mirror your connected SMK screen, keys and lights in Live Panel, or edit with grouped controls in Device Studio. Expand the live screen with the screen-only icon. Simulator and Browser Studio make sound without a connected device.
Made for hands-on control
Bank 1 controls volume, tempo, presets, track, then four page parameters. Hold GLO for grouped navigation or BT for Settings. FM6 operator and envelope pages use upstream editing rules. The MIDI monitor shows events or sounding notes, including sustain. MIDI Learn and Program Change add external control.
Your look
Choose Stage Red, Matrix, Vintage DX7, Model D, Vaporwave and more for Studio. The device has 23 palettes and regular or bold text, including light and high-contrast choices.
On your SMK
A clearer view on the keyboard
Parameter cards put four values across the top of the screen. A compact header shows track, tempo and transport; the middle panel brings together a four-track overview, envelope and LFO graphs, a live oscilloscope, or a 16-step pad grid.
Device previews show the track overview, envelope and step-editing pages. Use the SMK controls or Live Panel to navigate them.