FIRMWARE_TM_2_0=$(top_srcdir)/src/telemetrum-v2.0/telemetrum-v2.0-$(VERSION).ihx
FIRMWARE_TM_3_0=$(top_srcdir)/src/telemetrum-v3.0/telemetrum-v3.0-$(VERSION).ihx
-FIRMWARE_TM=$(FIRMWARE_TM_2_0) $(FIRMWARE_TM_3_0)
+FIRMWARE_TM_4_0=$(top_srcdir)/src/telemetrum-v4.0/telemetrum-v4.0-$(VERSION).ihx
+FIRMWARE_TM=$(FIRMWARE_TM_2_0) $(FIRMWARE_TM_3_0) $(FIRMWARE_TM_4_0)
FIRMWARE_TELEMINI_3_0=$(top_srcdir)/src/telemini-v3.0/telemini-v3.0-$(VERSION).ihx
FIRMWARE_TELEMINI=$(FIRMWARE_TELEMINI_3_0)