Stored separately from the firmware itself, you have calibration data related to the operation of the printer and various statistics. If these values become corrupted or are not compatible with a new version of the firmware, you can have some issues. If so, we recommend doing a factory reset.
There have been some changes to the menu structure of the SL1 between firmware versions. Therefore we will outline how to do the procedure starting with the latest version.
If you are seeing any inconsistent behavior we recommend also updating the firmware. A factory reset followed by flashing the firmware and recalibrating will resolve most firmware issues you may encounter. Please see Firmware updating (SL1/SL1S) for more information.
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