IGEL OS 11.01.110 IGEL OS Articles Miscellaneous Current: Updating IGEL UMD: Error "not compatible with System5" PDF Download PDF Download page Updating IGEL UMD: Error "not compatible with System5". Current page All pages Updating IGEL UMD: Error "not compatible with System5" SymptomUniversal Multi Display firmware (IGEL UMD) can't be updated to version 4.13.100.Error Message:Firmware not compatible.dmx_networkd: Slave #0 (MAC) not compatible with System5SolutionDelete file /tmp/NOT_SYS_5_COMPATIBLE from UMD master client and update again without rebooting. ×