Drivers and manuals


  • Version 1.7.5 Most recent (November 28, 2016)
    • Windows version 186MB
    • Mac OSX version 260MB
    • Updated Slic3r to Prusa Edition 1.31.6 (better cubic infill, better surface finish, better UI and better supports…) READ MORE
    • – New awesome 0.15 OPTIMAL print setting
    • – New bundled model – 3DLabPrint Spitfire!!
    • – General polishing of the print settings
    • – Cubic infill is default for all print settings
    • – Windows – Installer is more compatible with SCCM (no user interaction is required)
    • – Windows – Option to install desktop icons
    • – Windows – Better Slic3r settings and objects backup management
    • Linux instructions
    • Slic3r installation
    • Pronterface installation
    • – Use Slic3r config bundle and sample objects from Mac Package.
  • Older versions


  • Original Prusa i3 MK2
      • English 3D Printing Handbook 6MB
      • – Version 1.05 (PEI surface preparation changes, calibration flow tweaks, when is needed to redo the calibration, how to change filament during a print, dental floss for object removing, light and full factory reset, firmware update…)
      • – October 23, 2016
  • Original Prusa i3 “MK1” 1.75mm

    Manual is suitable even for 3mm version except material temperatures and images.



Firmware 3.0.9 (updated build November 4, 2016)

MK2 only for now, please re-run the V2calibration right after upgrade.
Changes in 3.0.9:

  • Firmware Updater V2 is included with this release. RAMBo will automatically reset before and after flashing. Flashing is more reliable. It will be updated in 1.7.5 Drivers package.
  • More descriptive user messages during the calibration flow
  • Self test now include both nozzle and print cooling fan
  • Temperature safety checks are now added in preheat process. This was a bug inherited from original MarlinFW
  • Better Octoprint compatibility

Full release log on Github

Changes in 3.0.8:

  • Reset live adjust on XYZ calibration
  • Disable timeouts in the XYZ/Z calibration
  • Don’t modify feed rate multiplier during the XYZ/Z calibration
  • Support multi screen messages in the XYZ/Z calibration – “move the Z carriages up” step
  • Support up to three lines in the XYZ/Z calibration messages
  • Added a new message “Measuring reference height of calibration point xx of 9”
  • Changed the “move the Z carriages up” message to suggest rotating the knob
  • Changed the “live adjust not set” message to reference the manual chapter and section
  • Remove debugging serial line output on Z calibration
  • Speed up of a path planner by rewriting some of the processing intensive parts from floating point to fixed point arithmetics
  • Improved accuracy of the diagonal movements by oversampling the line discretisation

Firmware 3.0.3 (June 12, 2016) (THE LATEST ONE FOR MK1)

Changes in 3.0.3:

  • G28 won’t run bed levelling when called with X or Y parameters
  • Factory reset will clear the Live adjust Z settings (helpful for upgraded printers)

Changes in 3.0.2:

  • Better homing
  • Homing without calibration
  • Live adjust Z fix
  • Fixed Z motor current