NEW: 2 New shortcuts. 1) Return Home: Long-press both Channel 1 and 2 MODE buttons (top 2 buttons on the right) to exit any alternate view (like CV Assign or Utility) and return home to the standard operating mode. 2) Clear All Channel Settings and Return Home: Long-press both Channel 3 and 4 MODE buttons (bottom 2 buttons on the right) to clear the current channel settings, modes, scaling and modulation assignments for all channels. This will also exit any view and return to the standard operating mode. Note: This shortcut will not clear any SYSTEM MODE options that you may have set, only the parameters available under normal usage. Updated manual available at intellijel.com/support.
Update via the Intellijel Web Firmware Updater (Chrome/Chromium required, uses WebDFU). Enter bootloader by holding CV A and Rise buttons while powering on the module with USB connected. Select Quadrax in the updater, then flash. Windows users must first install WinUSB/libusb driver via Zadig for the STM32 BOOTLOADER device.
What you need
Intellijel Web Firmware Updater — the software Intellijel uses to load firmware onto the Intellijel Quadrax. Download links below.
10 releases since Feb 2020, roughly one every 9 months.
Changelogs summarised from the manufacturer's release notes.
Version 1.4.5.0 — 10 Aug 2026
Release notes for this version are listed above.
Release notesopens in a new tab — intellijel.github.io
Version 1.4.1.0 — 27 May 2025
- FIXED: LFV Freezing up at with extreme modulation.
Version 1.4.0.0 — 27 Apr 2023
- NEW: In Utility Mode, the sync LEDs now flash with a trigger.
- NEW: CVD (Colour Vision Deficiency) Mode.
- Updated manual available at intellijel.com/support.
Version 1.3.1.0 — 28 Mar 2023
- FIXED: EOR on Qx/Gx is now before the S stage (in ASR) at the end of Rise.
Version 1.3.0.0 — 5 Oct 2021
- NEW: Utility UI Mode (Hold RISE + LEVEL for 1 Second to Toggle). The left buttons will manually trigger a channel; the right buttons will set (5 or 10V) and attenuate (20% Increments) the channel's output level.
- REMOVED: 10V/5V Envelope size global toggle. Replaced with per-channel setting in Utility Mode.
- FIXED: Phase/Clock Sync abnormalities in LFV Mode.
- Updated manual available at intellijel.com/support.
Version 1.2.1 — 9 Mar 2021
- CHANGE: Envelopes are linked via gates, not trigs. Allows triggering of AHR envelopes by linking to a previous envelope.
- CHANGE: Reduced size of pot dead zone.
- FIXED: Slightly longer minimum attack and decay times. Fixes modulation of some waveform types when at minimum.
- FIXED: LFOs not clock syncing in some cases.
Version 1.2.0 — 19 Nov 2020
- NEW: Phase sync for clock-synced LFOs. See manual for details.
- CHANGE: Various optimizations, reduced latency.
- CHANGE: Sharper minimum attack and decay times.
- CHANGE: Add 5% dead zone at end of pot travel to account for component tolerances.
- CHANGE: Remove crossfade at the extreme ends of one-shot mode 1. Instead the waveform just switches from square to sine.
- FIXED: Fixed initial phase of one-shot mode square waveforms.
- FIXED: Improved trigger detection.
Version 1.1.3 — 3 Mar 2020
- FIXED: Some settings may not have carried over correctly when the firmware was upgraded from 1.0.2 or earlier.
Version 1.1.2 — 25 Feb 2020
- FIXED: Edge case where CV assignments are not being applied.
- NEW: Long press LEVEL button when in System Mode to reset module's settings to defaults.
Version 1.1.0 — 6 Feb 2020
- NEW: Replaced original burst mode.
- NEW: Alternate modes for each mode.
- AR/ASR/Cycling AR: Mirrored Rise/Fall Curves.
- Burst: Tilting saw shape instead of sine/square crossfade.
- LFO: Low Frequency Vacillator — Drifting chaotic voltage source.
- CHANGE: More extreme log/expo curves.
- CHANGE: 10V is the new default Envelope size.
- NEW: System Mode for system toggles like envelope size.
- FIXED: Distorted expo/log curves.
Tracked in 2 rigs on FW//RADAR.
Intellijel Quadrax firmware FAQ
What is the latest firmware for the Intellijel Quadrax?
The latest firmware for the Intellijel Quadrax is version 1.4.5.0, released on 10 Aug 2026. FW//RADAR last checked Intellijel's official page on 27 Oct 2026.
How do I update the Intellijel Quadrax?
Update via the Intellijel Web Firmware Updater (Chrome/Chromium required, uses WebDFU). Enter bootloader by holding CV A and Rise buttons while powering on the module with USB connected. Full instructions on Intellijel's official firmware page.
What software do I need to update the Intellijel Quadrax?
You need Intellijel Web Firmware Updater, available from intellijel.github.io.
Where can I download Intellijel Quadrax firmware and drivers?
Directly from Intellijel's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →
