#905 Error when connecting to the mainboard. FLUX Support Team June 27, 2021 05:47 Updated Solutions- Restart the laser machine. Update to the latest Firmware. If none of the steps above helped, please contact FLUX Support. Related articles #402 Critical Error: Subsystem no response. 5-2-5 #904 Homing Failed Beambox – Reversed Homing Positition Update Beambox Firmware with USB Drive #902 Water Temperature Abnormal Comments 0 comments Please sign in to leave a comment.