https://fota-cloud-dn.ospserver.net/firmware/ SM-S947B EUX S947BXXS3AZF1/S947BOXM3AZF1/S947BXXS3AZF1 S947BXXU2AZDE/S947BOXM2AZDE/S947BXXU2AZDE 1 15 23 14 https://ifota-apis.samsungdm.com/device/fumo/deviceheartbeat FALSE