corsa D - replacement ECU - F on dash no start

hi all,

customer original ECU got water damage - he send it off to company to have cloned ECU to new unit and posted back to him

now all dash lights up but has F on dash, and wont turn over/start.



I wonder if i recode all modules, AIRBAG, ICM, BCM and re-register key, it will get it going ? or something deeper here?

Any input??


many thanks