LulzBot released several updates to the LulzBot Mini firmware that are included with the recent Cura LulzBot Edition version 20.
Among the updates is a check when the Mini runs auto calibration bed leveling to ensure that the calibration is within an acceptable range. If any of the corner checks are outside the range- typically caused by plastic on the nozzle preventing contact with the corner washer, the calibration start over with a re-wipe of the nozzle. If the calibration fails twice, the print is halted. This prevents damage to the bed from a bad calibration.
Here’s a guide to to perform this easy LulzBot Mini firmware update:
Download and install the latest version of Cura LulzBot Edition
Click OK when the firmware upgrade finishes. You’re done!