@neo-ninja You are hijacking this thread. Your problem might be related but is best handled in a new topic.   The material list being empty can be for two reasons: 1) You installed a firmware where this list is missing. I think we accidentally shipped one such version which means you are using an older firmware. Follow the above linked thread from GR5 which uses the recommended v4.3.3 recovery image file. 2) The printer lost its identification code. Check this by going to the