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New features

• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• Flexible filaments are slowed down less during nozzle cleaning (1/6 → 1/2 of the speed)
• Bed now lowers further during calibrations that need hand access inside the printer
• Dock calibration approaches the dock gently
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• OpenPrintTag support—the printer reads filament parameters from NFC-tagged spools
• Filament UUIDs (material, package, instance), shown in filament details and settable via M865.1
• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• OpenPrintTag support—the printer reads filament parameters from NFC-tagged spools
• Filament UUIDs (material, package, instance), shown in filament details and settable via M865.1
• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

• New features
  • New editions: CORE One+ (Gen 2) and CORE One L+
  • Nozzle Wiper support, replacing the previous print-start nozzle cleaning routine
  • GT1.5 belts support
  • Expansion Joints Gen 2 support, with a much shorter Absorbing heat phase [C1+ (Gen 2)]
  • Immediate stop on filament runout
  • Guided calibration order - calibrations and tests declare their prerequisites
• Changes and improvements
  • Reorganized menus - some settings have been moved to different submenus
  • Filament compatibility checks in more places
  • Custom filament names may contain lowercase letters
• Fixes
  • Fixed not restoring original temperature on filament runout/mid-print change
  • More reliable communication with the xBuddy Extension
  • The last file in a folder was not visible, and related file list fixes
  • The printer no longer beeps on boot in Silent mode
  • An upward swipe on the touchscreen is no longer registered as a tap
  • And a lot more

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• OpenPrintTag support—the printer reads filament parameters from NFC-tagged spools
• Filament UUIDs (material, package, instance), shown in filament details and settable via M865.1
• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features:

• Firmware image vendor-signed to prevent a malicious 3rd-party firmware attack vector 

Fixed Bugs:

• Reduced USB filesystem privileges to eliminate a potential attack vector
• Reduced privileges of Klipper components to eliminate potential attack vectors
• Removed unused source code stubs to eliminate potential attack vectors
• Printer REST API sanitized against potential malicious code injection
• Service SSH access removed
• Printer name validation by RFC 1123 fixed

Documents:

• Security content of Prusa Pro HT90 firmware 1.3.56, Advisory ID: PSA-2026-001

• Support for Prusa Connect
• Custom print profiles
• Updated PrusaLink Web
• Exposure time limits
• Reworked handling of USB flash drives
• API key support dropped
• Other improvements
• Bug fixes
• Known issues

• Extend all timers to 255 minutes
• IPA Filtering (new feature)
• Wash cycles (new feature)
• New heating algorithm
• Automatic fans control
• Factory reset option
• Improved self-test
• Bugfixes

New features

• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• OpenPrintTag support—the printer reads filament parameters from NFC-tagged spools
• Filament UUIDs (material, package, instance), shown in filament details and settable via M865.1
• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• OpenPrintTag support—the printer reads filament parameters from NFC-tagged spools
• Filament UUIDs (material, package, instance), shown in filament details and settable via M865.1
• New M204 F filament acceleration limit, enabled by default
• New Cyphal Info screen listing connected Cyphal nodes and their state

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

New features

• New M204 F filament acceleration limit, enabled by default

Changes and improvements

• Prusa Connect now receives per-tool data, consumed filament weight, loaded material and spool weight
• Error screens no longer show the printer hash and signature markers; QR code simplified
• BROWN color preset is now brown instead of dark red

Fixes

• Fixed screenshots having slightly wrong colors

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

• Support for Prusa Connect
• Custom print profiles
• Updated PrusaLink Web
• Exposure time limits
• Reworked handling of USB flash drives
• API key support dropped
• Other improvements
• Bug fixes
• Known issues

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

• Extend all timers to 255 minutes
• IPA Filtering (new feature)
• Wash cycles (new feature)
• New heating algorithm
• Automatic fans control
• Factory reset option
• Improved self-test
• Bugfixes

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

• Add filament presence check at start of print
• Region Mesh Bed Levelling fixes
• Show filament color/name during M600
• Fix safety timer not handled correctly
• Delay Z-Axis on Autoload
• Replace hard coded crash z lift value with Pause Z lift value.
• Send host actions on filament runout
• Lower MIN_Z_FOR_UNLOAD from 50mm to 20mm
• Add "load filament" if autoload is disabled
• Abort nozzle change if filament is loaded
• PowerPanic related changes
• Reduce ambient shutdown to 80 °C
• Added utils/build.py to be able to compile the firmware
• MMU related changes
• Minor fixes
• Community related changes

• Preheat error improved
• Improved temperature regulation
• Remaining time estimation
• Adjustable beeper notifications
• Incomplete file check updated
• G-code fixes (M27, M110, M115)

• Preheat error improved
• Improved temperature regulation
• Remaining time estimation
• Adjustable beeper notifications
• Incomplete file check updated
• G-code fixes (M27, M110, M115)

• Improved XYZ calibration
• XYZ calibration results are now available in Support menu
• Selftest fixed
• Improved unload filament
• Multi Material
• When stopping a print, user is asked what filaments to unload
• “T?” Gcode added, which selects extruder to use prior to the print
• Added support for MK1