# Firmware **URL:** https://forum.lulzbot.com/c/firmware/32.md [Latest](https://forum.lulzbot.com/latest.md) · [Categories](https://forum.lulzbot.com/categories.md) --- ## [About the Firmware category](https://forum.lulzbot.com/t/about-the-firmware-category/23628)
**Author:** [@rhenderson](https://forum.lulzbot.com/u/rhenderson)\ **Replies:** 0
This category is for any topic that is specifically related to firmware. Use this topic to discuss issues, changes, feature requests, and help related to firmware. Discussion is subject to removal/lock/recategorizatio… --- ## [Firmware update](https://forum.lulzbot.com/t/firmware-update/28080)
**Author:** [@gabriellemdek](https://forum.lulzbot.com/u/gabriellemdek)\ **Replies:** 0\ **Last updated:** [September 20, 2026, 1:35am UTC](https://forum.lulzbot.com/t/firmware-update/28080 "2026-09-20T01:35:32Z")
I have a Lulzbot TAZ workhorse. It was donated to our small school and last updated in 2022. Its installed firmware version is 2.0.9.0.13. I can not get Cura LE 4.13.17 to recognize the printer due to the outdated firmwa… --- ## [Need help with my Taz 4 and Firmware](https://forum.lulzbot.com/t/need-help-with-my-taz-4-and-firmware/27844)
**Author:** [@cktechnology](https://forum.lulzbot.com/u/cktechnology)\ **Replies:** 22\ **Last updated:** [February 20, 2026, 12:52am UTC](https://forum.lulzbot.com/t/need-help-with-my-taz-4-and-firmware/27844 "2026-02-20T00:52:00Z")
Hi All, I have pulled my 11 year old taz 4 out from hibernation and i desperately want to get printing. I cleaned it all up, recalibrated, and it did some nice test prints. However, i downloaded the latest firmware from… --- ## [Printer connection error after firmware update](https://forum.lulzbot.com/t/printer-connection-error-after-firmware-update/27856)
**Author:** [@Cserrano22](https://forum.lulzbot.com/u/Cserrano22)\ **Replies:** 1\ **Last updated:** [February 15, 2026, 2:07am UTC](https://forum.lulzbot.com/t/printer-connection-error-after-firmware-update/27856 "2026-02-15T02:07:48Z")
Updated the lulzbot mini2 to have the most current firmware from the 3.6.37 Cura LE software. I followed the instructions online but I am getting this error. Does anyone know what this means? --- ## [TAZ 6 How to edit skew compinsation](https://forum.lulzbot.com/t/taz-6-how-to-edit-skew-compinsation/27831)
**Author:** [@dnoone38](https://forum.lulzbot.com/u/dnoone38)\ **Replies:** 1\ **Last updated:** [January 7, 2026, 11:50pm UTC](https://forum.lulzbot.com/t/taz-6-how-to-edit-skew-compinsation/27831 "2026-01-07T23:50:00Z")
I have a taz 6 with marlin firmware 2.0.0.144.1. Does anyone know how to edit the skew compensation? I tried entering m852 but I got a message saying it was an unknown command. --- ## [Travel limits TAZ 3](https://forum.lulzbot.com/t/travel-limits-taz-3/27792)
**Author:** [@eears](https://forum.lulzbot.com/u/eears)\ **Replies:** 1\ **Last updated:** [November 30, 2025, 4:35am UTC](https://forum.lulzbot.com/t/travel-limits-taz-3/27792 "2025-11-30T04:35:55Z")
I have a TAZ 3 that I recently replaced the bed on. They no longer make the original hardware, so I had to purchase a 12V equivalent from another manufacturer. It works fine, but it’s larger and I would like to use thi… --- ## [Firmware version website vs Cura](https://forum.lulzbot.com/t/firmware-version-website-vs-cura/27788)
**Author:** [@TomsCables](https://forum.lulzbot.com/u/TomsCables)\ **Replies:** 0\ **Last updated:** [November 25, 2025, 5:54pm UTC](https://forum.lulzbot.com/t/firmware-version-website-vs-cura/27788 "2025-11-25T17:54:02Z")
Question, when updating my firmware to 2.0.9X I can find the hex file under the Taz 6 folder under the Cura 4.13.17 install directory. I can also find it on Gitlabs 2.0.9.0.13 for the TAZ6 and Workhorse (65cc7ed1) · C… --- ## [Error:printer halted. kill() called!](https://forum.lulzbot.com/t/error-printer-halted-kill-called/27770)
**Author:** [@IHateThis](https://forum.lulzbot.com/u/IHateThis)\ **Replies:** 3\ **Last updated:** [November 13, 2025, 10:44pm UTC](https://forum.lulzbot.com/t/error-printer-halted-kill-called/27770 "2025-11-13T22:44:04Z")
Hi guys, I need help to fix this problem, I could find any solution anywhere. --- ## [Mini 1.03 firmware issue](https://forum.lulzbot.com/t/mini-1-03-firmware-issue/27748)
**Author:** [@duck](https://forum.lulzbot.com/u/duck)\ **Replies:** 1\ **Last updated:** [October 10, 2025, 3:11am UTC](https://forum.lulzbot.com/t/mini-1-03-firmware-issue/27748 "2025-10-10T03:11:48Z")
Hi everyone, I’m using a Mini 1.03 single extruder that I got from a friend. It was working perfectly while I was printing with Ultimaker Cura. However, after switching to Cura LulzBot Edition, I was prompted to update t… --- ## [Upgraded to Cura LE 4.3.17 and can't check Z axis](https://forum.lulzbot.com/t/upgraded-to-cura-le-4-3-17-and-cant-check-z-axis/27725)
**Author:** [@gbfeldew](https://forum.lulzbot.com/u/gbfeldew)\ **Replies:** 3\ **Last updated:** [September 17, 2025, 8:37pm UTC](https://forum.lulzbot.com/t/upgraded-to-cura-le-4-3-17-and-cant-check-z-axis/27725 "2025-09-17T20:37:10Z")
I just upgraded to Cura LE 4.3.17. I also upgraded the firmware to 2.0.9.0.13 on my TAZ 6 with the M175 tool head. Every time I try to level the bed, the nozze misses the Z-height sensor. I tried to use gcode in the con… --- ## [Taz4 Firmware upgrade question](https://forum.lulzbot.com/t/taz4-firmware-upgrade-question/27552)
**Author:** [@TomsCables](https://forum.lulzbot.com/u/TomsCables)\ **Replies:** 3\ **Last updated:** [June 21, 2025, 4:28am UTC](https://forum.lulzbot.com/t/taz4-firmware-upgrade-question/27552 "2025-06-21T04:28:37Z")
Hello everyone, I have a Taz 4 that is still running the 1.0.0.1 version of Marlin. I have recently been looking at doing some upgrades to the system. Hardware wise it is stock other than upgrading the print head to… --- ## [Taz 4 resurrection](https://forum.lulzbot.com/t/taz-4-resurrection/26706)
**Author:** [@Jason](https://forum.lulzbot.com/u/Jason)\ **Replies:** 7\ **Last updated:** [May 16, 2025, 2:58am UTC](https://forum.lulzbot.com/t/taz-4-resurrection/26706 "2025-05-16T02:58:34Z")
I resurrected my Taz 4 from the shed recently and cleaned it up. Before putting it away in a box, I began to do some upgrades to it, just Z probes and dual extruder. As I remember about 4 years ago, I needed to flash t… --- ## [Can't set E steps on Mini 1](https://forum.lulzbot.com/t/cant-set-e-steps-on-mini-1/27502)
**Author:** [@camy16](https://forum.lulzbot.com/u/camy16)\ **Replies:** 1\ **Last updated:** [April 24, 2025, 7:27pm UTC](https://forum.lulzbot.com/t/cant-set-e-steps-on-mini-1/27502 "2025-04-24T19:27:19Z")
I just upgraded to Lulzbot Cura 3.6.4 (Ver 4 was not compatible with my mini) and went through all the steps. I recorded Z offset and E steps updated the firmware and reset the Z offset no problem. But when it comes to t… --- ## [Printer does not accept commands](https://forum.lulzbot.com/t/printer-does-not-accept-commands/27328)
**Author:** [@mcnich33](https://forum.lulzbot.com/u/mcnich33)\ **Replies:** 15\ **Last updated:** [February 17, 2025, 11:21pm UTC](https://forum.lulzbot.com/t/printer-does-not-accept-commands/27328 "2025-02-17T23:21:48Z")
I got a printer and I’m printing for the first time I get an error message that says “Printer does not accept commands”. Does anyone know how to fix this issue? Printer is Lulzbot TAZ Workhorse. --- ## [Big Tree Tech Octopus v 1.1 installed on TAZ 6 custom dual](https://forum.lulzbot.com/t/big-tree-tech-octopus-v-1-1-installed-on-taz-6-custom-dual/27247)
**Author:** [@CREnsign](https://forum.lulzbot.com/u/CREnsign)\ **Replies:** 11\ **Last updated:** [January 22, 2025, 8:28am UTC](https://forum.lulzbot.com/t/big-tree-tech-octopus-v-1-1-installed-on-taz-6-custom-dual/27247 "2025-01-22T08:28:05Z")
Hey guys and gals I have a TAZ 6 that i have had forever and a day always been a good printer but i have since replaced with bambu labs x1c’s. About a month ago i decided to knock the dust off of it and convert it to … --- ## [Outdated Firmware](https://forum.lulzbot.com/t/outdated-firmware/27030)
**Author:** [@bfeist](https://forum.lulzbot.com/u/bfeist)\ **Replies:** 1\ **Last updated:** [October 21, 2024, 3:18pm UTC](https://forum.lulzbot.com/t/outdated-firmware/27030 "2024-10-21T15:18:03Z")
I have a Lulzbot Mini version 1 with CuraLE 4.13.10. Its only upgrade that I can think of is that I upgraded the nozzle. I’m getting back to using the Mini after a hiatus of a few years, and I’m having trouble getting … --- ## [BL Touch not homing correctly Taz6](https://forum.lulzbot.com/t/bl-touch-not-homing-correctly-taz6/26696)
**Author:** [@Summit](https://forum.lulzbot.com/u/Summit)\ **Replies:** 0\ **Last updated:** [May 26, 2024, 11:50pm UTC](https://forum.lulzbot.com/t/bl-touch-not-homing-correctly-taz6/26696 "2024-05-26T23:50:14Z")
I have added a BLTouch to my Taz6 printer and downloaded the Drunken Octopus Firmware directly to my printer. When I first added the firmware it would touch down in the center of the build plate 1x. I was wanting it to c… --- ## [Firmware Synchronization for DIW](https://forum.lulzbot.com/t/firmware-synchronization-for-diw/26690)
**Author:** [@Jalom](https://forum.lulzbot.com/u/Jalom)\ **Replies:** 3\ **Last updated:** [May 24, 2024, 5:06pm UTC](https://forum.lulzbot.com/t/firmware-synchronization-for-diw/26690 "2024-05-24T17:06:11Z")
I work in a research lab and we’re trying to use a Lulzbot Pro to create a direct ink writing setup. Basically, instead of using the standard toolhead we’re replacing it with a nozzle attached to a pressure controller to… --- ## [LulzBot 4 E1 Heating Failed Error after firmware upgrade](https://forum.lulzbot.com/t/lulzbot-4-e1-heating-failed-error-after-firmware-upgrade/26607)
**Author:** [@Nicholas](https://forum.lulzbot.com/u/Nicholas)\ **Replies:** 3\ **Last updated:** [April 30, 2024, 1:40pm UTC](https://forum.lulzbot.com/t/lulzbot-4-e1-heating-failed-error-after-firmware-upgrade/26607 "2024-04-30T13:40:36Z")
I have not ben able to print from a Lulzbot 4 after a firmware upgrade. At first, I wasn’t able to print from the curalulzbot app, but it was able to print from the SD card input. The bed and printer head were able to h… --- ## [Cura 4.13.4 not heating anything and can't update firmware](https://forum.lulzbot.com/t/cura-4-13-4-not-heating-anything-and-cant-update-firmware/26414)
**Author:** [@johnwmcc](https://forum.lulzbot.com/u/johnwmcc)\ **Replies:** 2\ **Last updated:** [April 3, 2024, 10:38pm UTC](https://forum.lulzbot.com/t/cura-4-13-4-not-heating-anything-and-cant-update-firmware/26414 "2024-04-03T22:38:53Z")
Just experimenting with Cura LE 4.13.4 attached via USB to Mini v1, to try to resolve an unexpected issue with printing temperature (it was trying to print at 250C under Cura 3.6.36 and 3.6.40, and I can’t find where tha… --- ## [Taz Pro updated firmware crashes during auto alignment and backlash](https://forum.lulzbot.com/t/taz-pro-updated-firmware-crashes-during-auto-alignment-and-backlash/26446)
**Author:** [@unvaluablespace](https://forum.lulzbot.com/u/unvaluablespace)\ **Replies:** 3\ **Last updated:** [February 28, 2024, 10:35pm UTC](https://forum.lulzbot.com/t/taz-pro-updated-firmware-crashes-during-auto-alignment-and-backlash/26446 "2024-02-28T22:35:45Z")
Updated from Cura 3 LE to Cura 4.13.5 LE and it said a new firmware for the Taz Pro was available ( firmware 2.1.3.0.21). Ever since updating the firmware, the Taz pro has been having all sorts of issues, it gets stuck w… --- ## [Taz Pro Stuck in "printing" mode in touch UI](https://forum.lulzbot.com/t/taz-pro-stuck-in-printing-mode-in-touch-ui/26417)
**Author:** [@zenotek](https://forum.lulzbot.com/u/zenotek)\ **Replies:** 1\ **Last updated:** [February 16, 2024, 8:07pm UTC](https://forum.lulzbot.com/t/taz-pro-stuck-in-printing-mode-in-touch-ui/26417 "2024-02-16T20:07:56Z")
If you stop a print through Octoprint, the touch UI gets stuck thinking it’s still printing. That means lots of the options are not available. Hitting cancel print within the UI does nothing, it remains in a “printing”… --- ## [M420 Z Option Not Working Correctly](https://forum.lulzbot.com/t/m420-z-option-not-working-correctly/26369)
**Author:** [@zenotek](https://forum.lulzbot.com/u/zenotek)\ **Replies:** 2\ **Last updated:** [January 31, 2024, 12:01am UTC](https://forum.lulzbot.com/t/m420-z-option-not-working-correctly/26369 "2024-01-31T00:01:00Z")
I have submitted an issue request to GitLab, I am posting this here in case anyone has seen this before. The M420 Znn option for fade height does not work as expected. Any value other than 0 will result in the z axis o… --- ## [Flashing firmware on LulzBot Mini V1](https://forum.lulzbot.com/t/flashing-firmware-on-lulzbot-mini-v1/25678)
**Author:** [@alex](https://forum.lulzbot.com/u/alex)\ **Replies:** 7\ **Last updated:** [January 12, 2024, 10:20pm UTC](https://forum.lulzbot.com/t/flashing-firmware-on-lulzbot-mini-v1/25678 "2024-01-12T22:20:48Z")
Hello, my lulzbot mini has been sitting around for a few years and will no longer connect to the cura lulzbot software. Before abandoning it in my garage, I had it set up with Octoprint, and it worked fine. I have tried … --- ## [Taz Pro Firmware options](https://forum.lulzbot.com/t/taz-pro-firmware-options/26120)
**Author:** [@zenotek](https://forum.lulzbot.com/u/zenotek)\ **Replies:** 4\ **Last updated:** [November 11, 2023, 12:27am UTC](https://forum.lulzbot.com/t/taz-pro-firmware-options/26120 "2023-11-11T00:27:39Z")
Looking over the latest Cura beta release, I see firmware version 2.1.3.0.9 available for the Taz Pro XT. In GitLab, there appears to be active development on the 2.0.9.0.x version range. Since I can’t find a branch fo… --- ## [How to build firmware from https://gitlab.com/lulzbot3d/marlin](https://forum.lulzbot.com/t/how-to-build-firmware-from-https-gitlab-com-lulzbot3d-marlin/24438)
**Author:** [@b-morgan](https://forum.lulzbot.com/u/b-morgan)\ **Replies:** 8\ **Last updated:** [August 3, 2023, 3:36pm UTC](https://forum.lulzbot.com/t/how-to-build-firmware-from-https-gitlab-com-lulzbot3d-marlin/24438 "2023-08-03T15:36:23Z")
The last time I build firmware from sources was 1.1.9.34 and I used build-lulzbot-firmware.sh slightly modified to only build for a TAZ 6 and the tool heads I own. I would like to build the current Universal firmware (2.… --- ## [Taz Pro connect to computer](https://forum.lulzbot.com/t/taz-pro-connect-to-computer/25745)
**Author:** [@sampowell](https://forum.lulzbot.com/u/sampowell)\ **Replies:** 5\ **Last updated:** [June 12, 2023, 1:57pm UTC](https://forum.lulzbot.com/t/taz-pro-connect-to-computer/25745 "2023-06-12T13:57:03Z")
I cannot connect my computer to the Taz Pro printer. My Windows 7 does not recognize Rambo as a driver… --- ## [Lulzbot taz 6 workhorse - school setting](https://forum.lulzbot.com/t/lulzbot-taz-6-workhorse-school-setting/25359)
**Author:** [@mryeagle](https://forum.lulzbot.com/u/mryeagle)\ **Replies:** 1\ **Last updated:** [February 16, 2023, 3:58am UTC](https://forum.lulzbot.com/t/lulzbot-taz-6-workhorse-school-setting/25359 "2023-02-16T03:58:48Z")
Anything related to LulzBot Firmware You can also submit issue or feature requests here https://gitlab.com/lulzbot3d/marlin2.0 i was recently directed by a coworker to attempt to update the printer irmware. when I did… --- ## [Firmware on Taz 5 not updating through Cura](https://forum.lulzbot.com/t/firmware-on-taz-5-not-updating-through-cura/25111)
**Author:** [@nmkenney24](https://forum.lulzbot.com/u/nmkenney24)\ **Replies:** 3\ **Last updated:** [January 7, 2023, 11:32pm UTC](https://forum.lulzbot.com/t/firmware-on-taz-5-not-updating-through-cura/25111 "2023-01-07T23:32:28Z")
I have ended up with a Taz 5 printer and am having a few issues with it. I saw that the latest Firmware on it is 1.1.9.34. I got the notification that it needs an update on Cura and followed the steps to update it proper… --- ## [Use second extruder driver](https://forum.lulzbot.com/t/use-second-extruder-driver/24808)
**Author:** [@Chipwidget](https://forum.lulzbot.com/u/Chipwidget)\ **Replies:** 5\ **Last updated:** [September 21, 2022, 7:41pm UTC](https://forum.lulzbot.com/t/use-second-extruder-driver/24808 "2022-09-21T19:41:46Z")
Hi Community, I have an old TAZ 5. Marlin version is 1.1.9.34. In trying to change extruder I think I have made a wiring error on the stepper motor and cooked the E0 driver. (Original extruder doesn’t work now either.) … [Next page](https://forum.lulzbot.com/c/firmware/32.md?page=1)