This page contains all the firmware release notes for the UltiMaker S6 and S8. You can install the most recent firmware on the Latest or Stable channel via the network, or download the firmware file to update via USB.
Note: These release notes and the listed firmware versions are not for the older S series printers (S3, S5, and S7). Please visit this page instead.
Below, the release notes for the most recent Stable and Latest versions are shown. For older versions, check the archive dropdowns.
Firmware 11.3.0
Release channel: Latest
Release date: September 29, 2026
This update brings comprehensive improvements to your daily printing, including intelligent workflow safeguards, smooth screen navigation, better material handling, faster cloud monitoring, and enterprise-grade privacy. Below are the key benefits and practical workflow advancements introduced in this release.
- Uninterrupted Production with USB Disconnection Protection. Print jobs started from a USB flash drive are now automatically saved to internal high-speed memory before printing begins, ensuring your print job continues smoothly without disruption even if the drive is bumped or removed.
- Intelligent Print Head Homing. The printer now tracks print head position state using an intelligent motion state machine, eliminating unnecessary and repetitive homing cycles between operations to speed up your workflow and reduce mechanical noise.
- Smart Compatibility Checks. Eliminate guesswork and avoid wasted operator time before your print begins. The printer now automatically scans incoming sliced print files upon loading to verify that all required software features are supported by the active firmware. If a job requires newer firmware capabilities, clear guidance appears on the touchscreen before heating begins, protecting your material and scheduling.
- Automatic Collision Prevention for Multi-Part Projects. Printing batches of parts sequentially in "One-at-a-Time" mode significantly boosts production output. If a print job is ever canceled or stopped prematurely, the printer now automatically calculates safe clearance heights above all finished models on the bed before traveling home, eliminating print head collisions and protecting your valuable prints.
- Hardware-Accelerated, Fluid Touchscreen Interface. Experience a modern, highly responsive display interface. By upgrading the display engine to a hardware-accelerated graphics pipeline, browsing folders, tweaking print parameters, and navigating calibration wizards is now silky-smooth, instantaneous, and completely lag-free.
- Refined High-Speed Motion Quality & Arc Smoothing. Experience crisper corners, cleaner detail, and smoother surface finishes. We upgraded the motion controller trajectory planning with optimized arc blending during rapid travel transitions, eliminating micro-stutters and delivering superior surface aesthetics at high print speeds.
- Clearer Multi-Language Touchscreen Guidance. Troubleshooting is faster and easier for global teams. We updated the touchscreen localization engine with revised, user-friendly descriptions and translations for diagnostic error codes, providing straightforward instructions to resolve minor issues on the spot.
- Enterprise Network Privacy & Fast Wi-Fi QR Setup. Engineered for strict corporate and industrial IT environments, diagnostic log exports now automatically scrub and protect sensitive network credentials such as Wi-Fi passwords. Furthermore, connecting the printer to Wi-Fi via QR code scanning features enhanced retry protection for smooth, secure network onboarding.
Firmware 11.2.4
Release channel: Stable
Release date: September 29, 2026
Note: Firmware version 11.2.4 was originally released to the Latest channel on August 18, 2026, and promoted to the Stable channel on September 29, 2026.
When updating to 11.2.4 on the Stable channel, this version contains the combined features of all 11.2 firmware versions:
- Version 11.2.0: Upgraded underlying OS to Debian Bookworm, introduced QR code Wi-Fi onboarding, and improved setup wizard workflows and error messaging.
- Version 11.2.1: Resolved a material loading issue with the Material Station.
- Version 11.2.2: Hardened system security with cryptographic firmware validation, automated credential log redaction, web console protection, and Wi-Fi QR provisioning fixes.
- Version 11.2.4: This version includes behind-the-scenes support for updated hardware components used in UltiMaker production.
Tip: For more detailed changes and feature descriptions, see the release notes for the individual 11.2 releases below.
Older versions
Firmware 11.2.2
Release channel: Latest
Release date: July 9, 2026
Firmware version 11.2.2 is a recommended security and connectivity update for UltiMaker S6 and S8 printers. This firmware is engineered to keep your hardware investments perfectly protected, private, and securely connected to modern enterprise network infrastructure.
Note: Due to the security improvements, it is not possible to downgrade to any version below 11.2.2 after installing this version.
Improvements
- Firmware validation. Software updates are cryptographically verified on-device using a dual-layer signature validation system with Ed25519 signatures. Built-in downgrade protection permanently blocks attempts to install firmware below version 11.2.2.
- Log redaction. Wi-Fi passwords, local security PINs, and API credentials are automatically masked from log files and diagnostic exports.
- Web console security. The local web server includes Nginx headers to neutralize clickjacking attempts (CVE-2021-34087) and enforce strict browser resource loading. The Content Security Policy (CSP) replaced dynamic inline script access with explicit SHA-256 hashes of authorized local tools, while keeping camera monitoring streams fully operational.
- Update diagnostics. In the event of a firmware upgrade issue, the system automatically copies the SWUpdate execution history directly to an inserted USB flash drive.
Bug fixes
- Wi-Fi QR provisioning. Control and newline characters are stripped from scanned network payloads to neutralize configuration injection exploits. Resolved previous retry connection failures by cleanly restarting the networking service and rolling back settings on setup timeouts.
Firmware 11.2.1
Release channel: Latest
Release date: May 13, 2026
This is a patch release for UltiMaker S6 and S8 printers on the Latest channel. It resolves a known issue from the 11.2 release that caused loading problems with the Material Station. The printer's feeder would sometimes fail to respond correctly during material pickup, preventing the filament from reaching the print head. This has now been fixed.
Firmware 11.2.0
Release channel: Latest
Release date: February 9, 2026
This firmware brings a big distribution upgrade with enhanced security. Also included are several experience improvements and better error handling.
- Introduced user-friendly Wi-Fi setup using QR codes.
- Improved API security & data handling.
- Upgraded distribution from Debian Buster to Debian Bookworm.
- Improved error handling and messaging.
- Improved user flows in various wizards.
Note: This firmware has several known issues, please see below. The loading problems have been resolved in patch release 11.2.1 (release notes above).
Known issues
- Installation. We received some reports about firmware update stalling. It can take quite some time for the firmware installation to complete, especially if the printer has a connected Material Station. Allow up to 20 minutes, but if the printer is stuck on the logo for longer, power cycle the machine. Turn off the printer, wait at least 10 seconds, and turn the printer on again. It is recommended to check in the printer menu that the new version has installed correctly.
- Material loading on Pro Bundles. If the UltiMaker S6 or S8 is used with a Material Station, the feeder may sometimes not respond correctly during the material loading process. This can lead to the filament getting stuck in the Bowden tube slightly above the feeder and ER56. (This has been resolved in 11.2.1)
- Limit switch diagnostics. The diagnostic feature for checking the X, Y, and Z limit switches does not correctly show the state of the switches. If the switches are activated, this menu should show 'Pressed', but this currently does not work. This menu is found under Options (gear icon) → Maintenance → Diagnostics → Test homing switches.
Firmware 11.1.0
Release channel: Stable
Release date: May 19, 2025
Firmware 11.1.0 is the first public release for the UltiMaker S6; it is the minimum version that supports this printer model.
This version includes reliability improvements and bug fixes for the UltiMaker S8.
Improvements
- S6 support. This firmware includes support for both variants (glass build plate and flexible build plate) of the UltiMaker S6 printer.
- Boot up time. The time it takes for the printer to fully boot up is reduced by 50%.
- Any color materials. The 'any color' material profiles previously showed as "[Material] Generic" (for example "PLA Generic"), which is confusing, as there are also Generic material profiles. These have now been renamed to "UltiMaker [Material] (for example "UltiMaker PLA").
- Pressure advance. With this firmware, the pressure advance algorithm is only enabled during printing and disabled for any non-printing moves. This includes nozzle switching, material changes (during the print), and the end of print sequence. This improves the quality and stability of the prime tower.
- Print core cleaning. Removed the (unreliable) option to use PLA for the print core cleaning process. The high-speed print cores (AA+ and CC+) cannot be cleaned with PLA because the material tip will break in the nozzle. Use cleaning filament for reliable results.
- Connection reliability. Made some changes that improved the reliability of the printer's connection with Cura and Digital Factory.
Bug fixes
- Delayed extrusion. Fixed a bug that caused delayed extrusion on the left print core (1) when the printer is used in combination with a Material Station.
- Air Manager fan. If the Air Manager fan was unable to reach the desired speed, the error (ER86) was not triggered correctly. This has now been fixed.
- Extrusion errors. With certain geometries, the printer could often show extrusion error messages (ER65). This was a false positive and has now been fixed.
Firmware 11.0.1
Release channel: Stable and Latest
Release date: March 19, 2025
Note: This firmware is only supported on the UltiMaker S8.
- Removed compatibility of PLA with CC+ print cores. Use AA+ with PLA for optimal speed and quality.
Firmware 11.0.0
Release channel: Stable and Latest
Release date: March 13, 2025
Note: This firmware is only supported on the UltiMaker S8.
Initial release
Replaced the Marlin motion planner with UltiMaker Cheetah
- Using UltiMaker Cheetah, all printer motion is now smooth and jerk-limited
- Added input shaping for motion vibration compensation to further reduce ringing
- Added pressure advance to enable fast flow rate changes for high-speed printing
New functionality
- Added Z spindle calibration for improved Z accuracy
- Added an accelerometer measurement diagnostic
