If you are currently using V1.5.0 or V1.5.1, we recommend updating directly to V1.5.2 Beta to prevent bed leveling issues from affecting print quality and to gain full support for the official Top Cover.
V1.5.1 is a maintenance release based on V1.5.0, primarily addressing first-layer printing issues.
Heated Bed Leveling was not enabled before printing.After updating your firmware, please complete the following steps:
Multi-Toolhead Offset Calibration again with no filament loaded in any toolhead.Heated Bed Leveling is enabled so the printer performs bed leveling automatically before printing.