This page contains all the firmware release notes for the UltiMaker Factor 4 Plus. 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: This article contains only the release notes for the Factor 4 Plus. The firmware of the Factor 4 is different; please visit this page instead.
Firmware 11.2.4
Release channel: Latest
Release date: July 9, 2026
This version includes behind-the-scenes support for updated hardware components used in UltiMaker production. It contains no functional changes, bug fixes, or new features for existing printers. Your printing experience and workflow remain unchanged.
Firmware 11.2.1
Release channel: Stable
Release date: May 13, 2026
This is the initial release for UltiMaker Factor 4 Plus.
- UltiMaker Cheetah. This first release brings the Cheetah motion planner to the UltiMaker Factor Series. Print up to twice as fast as on the Factor 4.
- UltiMaker TRACE. This firmware also supports UltiMaker TRACE (Technical Reporting and Certification Engine), for continuous monitoring of printer processes to validate print performance.
- Firmware signing method. A new robust and secure signature validation system was implemented, using the industry-standard Ed25519 signatures.
- Optimizations. The Factor 4 Plus firmware includes many optimizations for CPU, memory, and I/O usage.
Older versions
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Firmware 11.2.2
Release channel: Latest
Release date: July 9, 2026
The 11.2.2 update for the UltiMaker Factor 4 Plus delivers critical quality-of-life enhancements, refined network diagnostics, and hardened cybersecurity trust relationships. This version ensures a reliable, seamless daily printing experience and keeps your machine safely connected to the UltiMaker cloud ecosystem.
Improvements
- Cloud progress tracking. The printer's internal state reporting structure has been refined. Progress updates, temperature telemetry, and print status continuously stream to the local touchscreen, the local display console, and the Digital Factory cloud dashboard during USB print operations.
- Web server security. The local web server features a secure Content Security Policy (CSP) that replaces unsafe script execution with a whitelist of authorized, cryptographically verified local files.
- Security certificates. The system's root security certificate stores were updated to maintain uninterrupted SSL/TLS connections to Digital Factory cloud endpoints.
Bug fixes
- USB print recovery. When a USB print job is aborted, the touchscreen immediately displays the reprint recovery screen without UI flickering.
- Camera stream compatibility. Webcam stream compatibility inside local network environments has been restored.
