<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>The printer has booted from an alternative slot due to failed boot attempts using the primary slot.</strong> Update the printer with up-to-date firmware ASAP to recover the primary slot. This usually happens after a failed update, or due to a hardware failure. Printer settings may have been reset.</p>
<p>Error name: Boot slot changed&nbsp;</p>
<p>Error code: #10601</p>
<h3>How to fix it?</h3>
<p>Try to flash the firmware again. Try to avoid using OTA flashing as your network can be a factor. If it persists, it may indicate an issue with the on-board eMMC storage and the board may need to be replaced. If so, please contact support.</p>
<h3>Guides</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1)</a></p>


Boot slot changed #10601 (SL1/SL1S)

Změna zaváděcího slotu #10601 (SL1/SL1S)

Boot-Slot geändert #10601 (SL1/SL1S)

Ranura de arranque cambiada #10601 (SL1/SL1S)

L'emplacement booté a changé #10601 (SL1/SL1S)

Slot di boot cambiato #10601 (SL1/SL1S)

Boot slot changed #10601 (SL1/SL1S) [進行中の翻訳]

Zmieniono slot rozruchu #10601 (SL1/SL1S)

Original Prusa Curing and Washing Machine (CW1S) is a recommended accessory for the Original Prusa SL1S

Original Prusa CW1 to CW1S platform upgrade

Original Prusa Enclosure assembly

Original Prusa XL

The Original Prusa i3 MK3S+ is the successor of the award-winning Original Prusa i3 MK2S 3D printer.

Original Prusa i3 MK3S+ kit assembly

Original Prusa SL1 to SL1S SPEED upgrade

Original Prusa MINI+ kit assembly

The Original Prusa MINI+ is a compact 3D printer with all the bells and whistles you would expect from the creators of the award-winning Original Prusa i3 MK2 and MK3S!

Original Prusa MINI+ semi-assembled

Original Prusa i3 to MMU2S upgrade

Original Prusa i3 MK3/MK3S to MK3S+ upgrade

Original Prusa SL1 3D printer is based on the MSLA printing process. Unlike Original Prusa i3 machines, this printer uses a high-resolution LCD panel and a UV LED to cure thin layers of resin to achieve an unprecedented level of detail.

Original Prusa SL1 kit assembly

The Original Prusa i3 MK3S is the successor of the award-winning Original Prusa i3 MK3 3D printer.

Original Prusa i3 MK3S kit assembly

Original Prusa i3 MK1 to MK2 upgrade

Original Prusa i3 Plus 2.85 mm to 1.75 mm upgrade

Original Prusa i3 Plus 1.75 mm to MK2S upgrade

Original Prusa i3 Plus 1.75 mm kit assembly

Original Prusa i3 MK2 to MK2S upgrade

Original Prusa i3 MK2/S to MMU1 upgrade

The Original Prusa MINI/MINI+ is a compact 3D printer with all the bells and whistles you would expect from the creators of the award-winning Original Prusa i3 MK2 and MK3S!

Original Prusa MINI assembly

Original Prusa i3 MK2S is a successor to Original Prusa i3 MK2 with small hardware tweaks for easier assembly and improved reliability.

Original Prusa i3 MK2S kit assembly

Original Prusa i3 MK2 kit assembly

Original Prusa i3 MK2S to MK3 upgrade

The Original Prusa i3 MK3 is the successor of the award-winning Original Prusa i3 MK2 3D printer.

Original Prusa i3 MK3 kit assembly

Original Prusa i3 MK3 to MK3S upgrade

Original Prusa i3 MK2 MMU1 to MK2.5S MMU2S

Original Prusa i3 MK2 to MK3S upgrade

Original Prusa i3 MK3/MK2.5 to MMU2 v1.01

Original Prusa i3 MK2.5 to MK2.5S upgrade

Original Prusa i3 MK2 to MK2.5S upgrade

Assembly manuals

Advanced calibration

Basic calibration

What to do when the printer reports an error message during calibration.

Calibration Error Messages

All information you need to know to learn how to calibrate your 3D printer to achieve perfect prints.

Calibration

Printer description

Printer features

FAQs and other useful information you might be interested in before or after making your purchase at shop.prusa3d.com

General Information

Basic overview of your 3D printer and it's features, plus general Prusa Research info.

About your printer

3D models

Material guide

Printer maintenance

Prusa Connect & PrusaLink

Slicing

In this section, you can find material guides, printer troubleshooting and general info about using your printer.

Using the printer

Print Quality Troubleshooting

Printer troubleshooting

QR Error codes

Print Error Messages

Description of how to recognize and solve common problems, especially hardware and electronics related.

Troubleshooting

Nozzles

Octoprint

Printer simulator

Protective Shields

Learn about different nozzles, Raspberry Pi connection, Octoprint and more.

3rd party accessories & Other projects

About PrusaSlicer

Configuration and profiles

User interface

Input/output

Left toolbar

Top toolbar

Print settings

Filament settings

Printer settings

Advanced features

Multi-material slicing

SLA slicing

Other (PrusaSlicer)

The official documentation for the PrusaSlicer slicing software. From basic configuration to advanced settings like modifier meshes.

PrusaSlicer

P.I.N.D.A. sensor

Thermistor

Filament sensor

M.I.N.D.A. sensor

MINI

Tube fitting

Print fan

USB port

Power Button

Liquid Resin

Curing / Solidifying

Lid (SL1)

Whole mechanical assembly of SL1 print platform

Tilt

Tank

Selector knob

Filament buffer

Wipe tower / Purge tower

Micro USB port

Reset button

Firmware

Long PTFE between an extruder motor and hotend

Bowden tube

Controller board

Blade

Hotend

Ethernet port (LAN)

Power switch

Extruder / Extruder motor

Nozzle

Print head

Extruder PTFE tube (bowden MINI)

LCD screen

Spool holder

SL1 file (*.sl1)

Print display (SL1)

Heatbed

Belt tension

Extruder

Flexible steel sheet

Chimney (IR-sensor-holder-MMU2S)

Control Buttons (MMU2S)

Indicator LEDs (MMU2S)

Selector motor (MMU2S)

Pulley motor (MMU2S)

Idler motor (MMU2S)

F.I.N.D.A. sensor (MMU2S)

Live Adjust Z

Filament tip

Tension Screws (MMU2S)

Idler screw

Print speed

Heater cartridge

Filament sensor introduced with the S-upgrade of MK3 and MMU2

IR filament sensor

Selector (MMU2S)

MMU idler (MMU2S)

Diameter of filament compatible with Original Prusa printers.

1.75 mm

FFF/FDM

Filament

Bondtech gears

Hotend thermistor

Heatbed thermistor

Heat block

Modifier meshes

Support enforcers

Support blockers

Hollowing

Original Prusa MK3

Original Prusa MK3S

Original Prusa SL1

Original Prusa MMU2S

Touch screen

Check the cables

Tower / Z-Axis

UV led panel

Knob (SL1)

Connected to the printer and used with Octoprint

Raspberry Pi

Prusa Connect

Prusa Connect Local

SD card

USB drive

Test

test relation1122

Einsy

Original Prusa MK2.5

Original Prusa MK2.5S

Heatsink

Print platform

SuperPINDA

Mesh bed leveling

for securing PTFE in the MINI brass fitting

Olive

Buddy board

FEP foil

Tilt motor

Cantilever

Hotend fan

<h3>What happened?</h3>
<p>The printer displaying the message: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;An unexpected error has occured. Please restart the printer. Contact our tech support if the problem persists.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">An unexpected error has occurred. Please restart the printer. Contact our tech support if the problem persists.</span></p>
<p>Error name: An unexpected error has occurred.</p>
<p>Error code: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;#10701&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">#10701</span></p>
<p>An undefined error has occurred.&nbsp;</p>
<h3>How to fix it?</h3>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;An unexpected error has occured. Please restart the printer. Contact our tech support if the problem persists.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">Please, restart the printer. Contact our tech support, with a log-file if the problem persists.</span></p>
<h3>Guide</h3>
<p><a href="http://help.prusa3d.com/article/saving-log-file-sl1-sl1s_142334">Saving log file (SL1/SL1S)</a></p>


An unexpected error has occurred #10701 (SL1)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>The printer is not calibrated. Please run the Wizard first</strong>.</p>
<p>Error name: Not mechanically calibrated</p>
<p>Error code: #10113</p>
<p>Issued when the printer has not been calibrated before a print.</p>
<h3>How to fix it?</h3>
<p>Go in the printer menu to <em>LCD menu -&gt; Settings -&gt; Calibration -&gt; Printer Calibration</em>. Follow the instructions on the screen, and remember that you can swipe the screen to see example pictures of each step of the calibration.</p>


Calibration error #10113 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Failed to load fans and LEDs factory calibration.</strong> The printer was not able to find the UV PMW value due to a calibration error, or the installation of a new UV LED.</p>
<p>Error name: Calibration load failed</p>
<p>Error code: #10524</p>
<h3>How to fix it?</h3>
<p>Please calibrate the printer in the menu in Settings -&gt; Calibration -&gt; UV Calibration. If you have just replaced the UV LED, follow the steps to <a href="http://help.prusa3d.com/guide/how-to-replace-a-uv-led-assembly-sl1_149828#150319">calibrate the UV LED</a>.&nbsp;</p>
<p>&nbsp;</p>


Calibration load failed #10524 (SL1)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>Cannot set the update channel</strong>, please restart the printer and try again.</p>
<p>Error name: Cannot set update channel</p>
<p>Error code: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;#10513&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">#10513</span></p>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This is related to stable, beta, dev update channels. The user can switch stable&lt;-&gt;beta in advanced settings -&gt; firmware update. The admin interface allows to switch also to dev. This signals switch failure. Most probably the printer configuration is somehow broken. An update to latest build in the current channel or factory reset could help.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">This is related to update channels for stable or beta versions of the firmware. The user can choose between a stable and beta version of the firmware, in Settings -&gt; Firmware. Most probably the printer configuration is somehow broken.&nbsp;</span></p>
<h3>How to fix it?</h3>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This is related to stable, beta, dev update channels. The user can switch stable&lt;-&gt;beta in advanced settings -&gt; firmware update. The admin interface allows to switch also to dev. This signals switch failure. Most probably the printer configuration is somehow broken. An update to latest build in the current channel or factory reset could help.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">Update to the latest stable firmware version and/or factory reset.</span></p>
<h3>Guide</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1/SL1S)</a></p>


Cannot set update channel #10513 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Saving the new factory default value failed. Restart the printer and try again.</strong></p>
<p>Error name: Data overwrite failed</p>
<p>Error code: #10530</p>
<h3>How to fix it?</h3>
<p>Restoring to factory defaults failed. Restart the printer and try again. If it fails again, please update the firmware before another attempt.</p>
<h3>Guides</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1)</a></p>


Data overwrite failed #10530 (SL1/SL1S)

Boot slot changed #10601 (SL1/SL1S)

What happened?

How to fix it?

Guides

Comments

Still have questions?