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                  1. Support
                  2. Printer troubleshooting
                  3. Factory reset (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, MINI/+, XL)
                   

                  Contents

                  • How to factory reset (6.4.0)
                  • How to factory reset (pre-6.4.0)
                  • Flashing firmware

                  Blog

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                  Factory reset

                  (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, MINI/+, XL)

                  Relevant for

                  XL
                  MK4 family
                  MK3.9 family
                  MK3.5 family
                  MINI family
                  +
                  4 comments
                  Article is also available in following languages
                  English
                  Čeština
                  Polski
                  Deutsch
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                  日本語

                  During normal function, your printer saves statistics, calibration data, and personalized settings, even after it is turned off. If you feel like you changed settings that have negatively affected your 3D printer, it is always possible to revert to factory default values. 

                  How to factory reset (6.4.0)

                  Starting with firmware 6.4.0, we introduced several categories for factory reset. 

                  • Calibrations: All the calibration data and selftest results.
                  • Common misconfigurations: Settings that most commonly cause unexpected behavior, including disabling filament sensors and changing steps per mm. 
                  • Network: Wi-Fi, Ethernet, Prusa Connect, PrusaLink related items. Those are set in the printer LCD Menu -> Settings -> Network.
                  • User interface: Items that affect user interaction with the printer, including language, sound settings, footer settings, touchscreen, and LEDs. Those are set in the printer LCD Menu -> Settings -> User Interface. 
                  • Stats: Print & error statistics, visible in the LCD Menu -> Info -> Print Statistics. 
                  • HW configuration: Items that are linked to the hardware installed on the printer: nozzle diameters, extruder type, steps per mm, printer type. Those are set in the printer LCD Menu -> Settings -> HW setup. 
                  • Printer functions: Configuration of various print functions, such as MMU, chamber filtration, HW checks. 
                  • User profiles: Custom filaments, and for MK3.5/S and MINI/ only, custom print sheets. 

                  Several factory reset presets are available. 

                  • Ownership transfer: Resets the network and user profiles, but keeps the HW configuration, calibrations, and statistics. 
                  • Fix common misconfigurations: Resets only the common misconfigurations.
                  • Keep HW config: Resets everything, apart from the HW configuration. This reset is performed before we ship assembled printers from our factory. 
                  • Full reset: Wipes everything, except for the firmware. 
                  • Hard reset: Wipes everything, including the firmware. Before selecting this option, it is necessary to connect a USB drive to the printer, with a compatible firmware file in its root folder. 

                  With the exception of hard reset, to initiate the process, select a preset to enter the details of the categories that are to be reset. Once you enter the selected preset, you can adjust each category individually to choose whether it will be kept or reset. 

                  Selecting hard reset enters a confirmation dialog. Before confirming, ensure you have a USB drive connected to the printer, with a compatible firmware file in its root folder. 

                  How to factory reset (pre-6.4.0)

                  Factory Reset can be done via LCD Menu -> Settings -> System -> Factory Reset. 

                  Starting firmware 4.6.1 there are two options:

                  • Reset Settings & Calibrations - this option deletes all changes done by the user and reverts the system to its original state. For most of the cases, this is a sufficient method. Technically speaking only the EEPROM with user stored data is deleted. Once, the reset is done, the printer will boot to language selection, followed by the calibration wizard.
                  • Hard reset (USB with FW needed) - due to the complex partition layout, the firmware stores its settings not only in the EEPROM but also on the XFLASH. In some edge cases, it might be necessary to delete both of these. Once this reset is done, the user must insert a USB drive with firmware as some parts of the XFLASH will be created again from scratch.

                  Flashing firmware

                  If you see any inconsistent behavior, we recommend also flashing the firmware.

                  • CORE One, MK4/S, MK3.9/S, MK3.5/S, XL
                  • MINI/+

                  A factory reset followed by flashing the firmware and recalibrating will resolve most firmware issues you may encounter. 

                  Was this article helpful?
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                  3 comments

                  Log in  to post a comment
                  cuberose
                  •
                  Just unboxed and selected the wrong language because I misclicked on this tiny screen... I am not going over the first "OK" screen with the face icon. Pressing reset still has the wrong language set.

                  Now I am stuck with a language I don't understand and can't reset to the language selection.
                  Reply
                  sabinn
                  •
                  When at the orange Puppy Error screen, there is no access to the menu to choose a Factory Reset.
                  Reply
                  3Dietrich
                  •
                  a link to the firmware would be useful
                  Reply
                  Marina Curzi - Official Prusa CS
                  •

                  It has been added, thank you for the suggestion.

                  Reply

                  Topics

                  • Troubleshooting
                    • Printer troubleshooting
                      • Extruder blob
                      • Multimeter usage
                      • PrusaLink Troubleshooting
                      • Homing error Z #17301 (XL)
                      • Modular bed error #17501 (XL)
                      • Dwarf error #17502 (XL)
                      • Nozzle Cleaning Failed #17834 (XL)
                      • Extruder preheat error #17202 (XL)
                      • Extruder thermal runaway #17204 (XL)
                      • Extruder Mintemp error #17208 (XL)
                      • Extruder Maxtemp error #17206 (XL)
                      • Puppy error #17514 (XL)
                      • No FW on USB flash drive #17604 (XL)
                      • Unsupported printer model #17610 (XL)
                      • Unsupported Buddy FW #17611 (XL)
                      • USB flash error #17613 (XL)
                      • Invalid FW size on USB flash drive #17603 (XL)
                      • USB flash drive not connected #17602 (XL)
                      • Firmware missing #17612 (XL)
                      • FW in internal flash corrupted #17608 (XL)
                      • Hash verification failed #17607 (XL)
                      • Imposter! Fake signature #17606 (XL)
                      • Flash erase error #17605 (XL)
                      • Unsupported firmware BBF file #17614 (XL)
                      • Modular bed error #17250 (XL)
                      • Toolchanger error #17135 (XL) #36135 (CORE One INDX)
                      • Extruder temp not matching #17210 (XL)
                      • Modular bed error #17251 (XL)
                      • Modular bed error #17252 (XL)
                      • Modular bed error #17253 (XL)
                      • Modular bed error #17254 (XL)
                      • Modular bed error #17256 (XL)
                      • Modular bed error #17257 (XL)
                      • Modular bed error #17302 (XL)
                      • Modular bed error #17303 (XL)
                      • Dwarf error #17503 (XL)
                      • ESP error #17505 (XL)
                      • ESP error #17506 (XL)
                      • ESP error #17504 (XL)
                      • Emergency stop #17510 (XL)
                      • Puppy error #17511 (XL)
                      • Puppy error #17512 (XL)
                      • Puppy error #17513 (XL)
                      • Puppy error #17515 (XL)
                      • Puppy error #17516 (XL)
                      • Puppy error #17517 (XL)
                      • Puppy error #17518 (XL)
                      • Puppy error #17519 (XL)
                      • Puppy error #17520 (XL)
                      • Puppy error #17521 (XL)
                      • Puppy error #17522 (XL)
                      • Hotend preheat error #31202 (CORE One) #35202 (CORE One L) #26202 (MK4S) #13202 (MK4) #27202 (MK3.9S) #21202 (MK3.9) 
                      • Hotend mintemp error #31208 (CORE One) #35208 (CORE One L) #26208 (MK4S) #13208 (MK4) #27208 (MK3.9S) #21208 (MK3.9)
                      • Selftest failed (XL single-tool)
                      • Filament not loading (XL)
                      • Clogged hotend (XL)
                      • Heatbreak Mintemp error #17211 (XL)
                      • Heatbreak Maxtemp error #17212 (XL)
                      • Homing error X #17304 (XL)
                      • Homing error Y #31305 (CORE One) #35305 (CORE One L) #36305 (CORE One INDX) #17305 (XL)
                      • USB Port Overcurrent #17306 (XL)
                      • USB Device Overcurrent #17307 (XL)
                      • I2C Send Failed #17311 (XL)
                      • I2C Send Busy #17312 (XL)
                      • I2C Send Timeout #17313 (XL)
                      • I2C Send Undefined #17314 (XL)
                      • I2C Receive failed #17315 (XL)
                      • EEPROM I2C Receive Busy #17316 (XL)
                      • I2C Receive Timeout #17317 (XL)
                      • I2C Receive undefined #17318 (XL)
                      • Modular Bed Error #17319 (XL)
                      • Out of memory #17507 (XL)
                      • PNG Buffer Full #17508 (XL)
                      • Loadcell not calibrated #17523 (XL)
                      • Loadcell tare error #17524 (XL)
                      • Loadcell tare failed #17525 (XL)
                      • Loadcell measure failed #17526 (XL)
                      • Loadcell Bad Configuration #17527 (XL)
                      • Loadcell timeout #17528 (XL)
                      • LED Memory Error #17529 (XL)
                      • Marlin Request Timeout #17530 (XL)
                      • BBF Allocation Failed #17531 (XL)
                      • BBF Initialization failed #17532 (XL)
                      • Heatbed Port Overcurrent #31309 (CORE One) #35309 (CORE One L) #26309 (MK4S) #13309 (MK4) #27309 (MK3.9S) #21309 (MK3.9) #28309 (MK3.5S) #23309 (MK3.5) #12309 (MINI) #36309 (INDX)
                      • MMU Overcurrent #31310 (CORE One) #35310 (CORE One L) #26310 (MK4S) #13310 (MK4) #27310 (MK3.9S) #21310 (MK3.9) #28310 (MK3.5S) #23310 (MK3.5)
                      • I2C Send failed #31311 (CORE One) #35311 (CORE One L) #36311 (CORE One INDX) #26311 (MK4S) #13311 (MK4) #27311 (MK3.9S) #21311 (MK3.9) #28311 (MK3.5S) #23311 (MK3.5) #12311 (MINI/+)
                      • Loadcell Not Calibrated #31523 (CORE One) #35223 (CORE One L) #26523 (MK4S) #13523 (MK4) #27523 (MK3.9S) #21523 (MK3.9)
                      • Loadcell Measure Failed #31526 (CORE One) #35526 (CORE One L) #36526 (CORE One INDX) #26526 (MK4S) #13526 (MK4) #27526 (MK3.9S) #21526 (MK3.9) #36526 (CORE One INDX)
                      • Heatbreak MINTEMP Error #31211 (CORE One) #35211 (CORE One L) #26211 (MK4S) #13211 (MK4) #27211 (MK3.9S) #21211 (MK3.9)
                      • Modular Bed Error #17320 (XL)
                      • Homing error X #26304 (MK4S) #13304 (MK4) #27304 (MK3.9S) #21304 (MK3.9) #28304 (MK3.5S) #23304 (MK3.5)
                      • Tangled filament
                      • Factory reset (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, MINI/+, XL)
                      • Nextruder filament sensor (CORE One, CORE One L, MK4/S, MK3.9/S, XL/+)
                      • XY probe unstable #17105 (XL)
                      • XY position invalid #17106 (XL)
                      • Pin not reached #17107 (XL)
                      • Dock position out of bounds #17103 (XL)
                      • Tool offset out of bounds #17104 (XL)
                      • ESP not connected #17533 (XL)
                      • Connect Registration Failed
                      • Hotend preheat error #28202 (MK3.5S) #23202 (MK3.5)
                      • Hotend thermal runaway #28204 (MK3.5S) #23204 (MK3.5)
                      • Hotend mintemp error #28208 (MK3.5S) #23208 (MK3.5)
                      • Hotend temp not matching #28210 (MK3.5S) #23210 (MK3.5)
                      • Connect Registration Failed #17401 (XL)
                      • Selftest failed (XL multi-tool)
                      • Blue Screen of Death (BSOD) #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)
                      • Stuck filament detection #31101 (CORE One) #35101 (CORE One L) #26101 (MK4S) #13101 (MK4) #27101 (MK3.9S) #21101 (MK3.9) #17108 (XL)
                      • Heatbed temp not matching #31209 (CORE One) #35209 (CORE One L) #26209 (MK4S) #13209 (MK4) #27209 (MK3.9S) #21209 (MK3.9) #28209 (MK3.5S) #23209 (MK3.5)
                      • Hotend temp not matching #31210 (CORE One) #35210 (CORE One L) #26210 (MK4S) #13210 (MK4) #27210 (MK3.9S) #21210 (MK3.9)
                      • Hotend Heater Overcurrent #17322
                      • Heatbed temp not matching #17209 (XL)
                      • Toolchanger problem #17813 (XL multi-tool)
                      • Loadcell troubleshooting
                      • Under-extrusion (Nextruder printers)
                      • EXTRUDER ERROR #17536 (XL)
                      • Nozzle Timeout #31819 (CORE One) #35819 (CORE One L) #36819 (CORE One INDX) #26819 (MK4S) #13819 (MK4) #27819 (MK3.9S) #21819 (MK3.9) #28819 (MK3.5S) #23819 (MK3.5) #17819 (XL) #12819 (MINI)
                      • Filament sensor stuck #31113 (CORE One) #35113 (CORE One L) #36113 (CORE One INDX) #17113 (XL) #26113 (MK4S) #13113 (MK4) #27113 (MK3.9S) #21113 (MK3.9) #28113 (MK3.5S) #23113 (MK3.5) #12113 (MINI/+)
                      • Homing error X #31304 (CORE One) #35304 (CORE One L) #36304 (CORE One INDX) #17304 (XL)
                      • MCU in Buddy is overheated #31825 (CORE One) #35825 (CORE One L) #26825 (MK4S) #27825 (MK3.9S) #28825 (MK3.5S) #13825 (MK4) #21825 (MK3.9) #23825 (MK3.5) #17825 (XL) #12825 (MINI)
                      • The heatbed cooled down during the power outage #31808 (CORE One) #35808 (CORE One L) #26808 (MK4S) #27808 (MK3.9S) #28808 (MK3.5S) #13808 (MK4) #21808 (MK3.9) #23808 (MK3.5) #17808 (XL) 
                      • The G-code isn't fully compatible #31803 (CORE One) #26803 (MK4S) #27803 (MK3.9S) #28803 (MK3.5S) #13803 (MK4) #21803 (MK3.9) #23803 (MK3.5) #17803 (XL) #12803 (MINI)
                      • Filament not detected #31804 (CORE One) #35804 (CORE One L) #26804 (MK4S) #27804 (MK3.9S) #28804 (MK3.5S) #13804 (MK4) #21804 (MK3.9) #23804 (MK3.5) #17804 (XL) #12804 (MINI)
                      • Print preview unfinished selftest #31801 (CORE One) #35801 (CORE One L) #26801 (MK4S) #27801 (MK3.9S) #28801 (MK3.5S) #13801 (MK4) #21801 (MK3.9) #23801 (MK3.5) #17801 (XL) #12801 (MINI)
                      • Crash recovery axis long #31809 (CORE One) #35809 (CORE One L) #26809 (MK4S) #13809 (MK4) #27809 (MK3.9S) #21809 (MK3.9) #28809 (MK3.5S) #23809 (MK3.5) #17809 (XL) #12809 (MINI)
                      • Crash recovery repeated crash #31811 (CORE One) #35811 (CORE One L) #26811 (MK4S) #13811 (MK4) #27811 (MK3.9S) #21811 (MK3.9) #28811 (MK3.5S) #23811 (MK3.5) #17811 (XL) #12811 (MINI)
                      • Crash recovery axis short #31810 (CORE One) #35810 (CORE One L) #26810 (MK4S) #13810 (MK4) #27810 (MK3.9S) #21810 (MK3.9) #28810 (MK3.5S) #23810 (MK3.5) #17810 (XL) #12810 (MINI)
                      • Crash recovery home fail #31812 (CORE One) #35812 (CORE One L) #26812 (MK4S) #13812 (MK4) #27812 (MK3.9S) #21812 (MK3.9) #28812 (MK3.5S) #23812 (MK3.5) #17812 (XL) #12812 (MINI)
                      • Chamber overheating #36260 (INDX) #31260 (CORE One) #35260 (CORE One L) #17260 (XL)
                      • Chamber temperature is critical #36261 (INDX) #31261 (CORE One L) #35261 (CORE One) #17261 (XL)
                      • Clogged nozzle (CORE One, CORE One L, XL, MK4/S, MK3.9/S)
                    • Diagnostics
                    • Print Quality Troubleshooting
                    • QR Error codes
                    • Print Error Messages