@PhilB79 said in M5CoreS3: "ERROR Device type unknown" when trying to connect both CoreS3 and CoreS3 SE to Server.:
@teastain
UIflow 2 / Select device / RED dot next to the CoreS3 graphic. Same applies to CoreS3
silly question but you are logged in to Uiflow2 with same login credentials as in M5Burner (bind)