Daf lf 45/150 2008 model won't start after change of Ecu how do I fix it?

I changed my Ecu on my daf lf 45/150 and the obd is showing normally with only brake and air pressure errors showing but the vehicle won't start what do I do to start. Or do need to change the glass chip in the key as well ?all has been done including bleeding and priming the whole fuel circuit ie common rail ,pump etc. What have I not done write to make the vehicle start. Heip me. Moya