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 PVA and BVOH filament presets [6.9.2] Filament color support Runout Reaction setting for instant or delayed runout handling (#5423) Filament Sensor Calibration in Calibrations & Tests [6.5.1] Redesigned error screens (BSOD/RSOD) [6.5.1] Changes and improvements New versioning policy Reorganized Tune menu [6.9.0] New Customize button for tweaking a loaded filament Filament sensor selftest now detects a disconnected sensor [6.9.0] G-code lines sent over USB/serial that are too long now show a warning PrusaLink file downloads now keep long file names Prusa Connect now shows changed chamber, fan and light values within seconds Fixes Security and robustness fixes (see security bulletin PSA-2026-002) Fixed a crash on the print preview screen Fixed text overflowing on the factory reset screen Fixed tool mapping being ignored when starting a print from Prusa Connect Display glitch recovery now also works on error and boot screens
New features Automatic chamber vent opening/closing (C1/+) Belt tuning wizard (C1/+) Faster and more responsive Prusa Connect experience Nozzle cleaning failed wizard Auto-retract (MK4 family, XL) Auto-retract improvements (C1/+) Auto-retract disable option (C1/+) Selective factory reset Chamber support for backwards G-Code compatibility (C1/+) Changes and improvements Improved print status messages Lazier homing, more cautious calibration Autoload improvements Unified XL & CORE One chamber filtration Option to continue after nozzle cleaning failure Print sheet detection (MK4 family) Respect maximum printed Z position Gearbox alignment calibration (XL) Filament change from Tune menu in any tool (XL) Support cancelling more objects Wi-Fi signal strength indicator BSOD knob press behavior Reworked filament sensor evaluation Ukrainian language support for all printers Fixes All the fixes from the 6.3.X releases have been expanded to other printers. Various fixes and stability improvements
