hyundai i30 not start

[westlock]

trade customer asked me to sort out non start on 2010 Hyundai i30. the dash is alight the car kranks but no start. 2 no remote keys still operate the doors ok. immo ring does not give signal so i change that for new and still no signal . tried to reprogramme keys but ecu locked so I left ignition on with booster pack on for 2 hour but made no difference

thanks for any help