Just an update on this one.
Plugged used FRM in, attempted to program and code on autohex but stated ecu not compatible. Tried on ISTA but that failed too.
Used hexprog to read and write D and P Flash from old FRM to used FRM. Plugged in to car, FRM/ ECU now ok. Programmed and coded to car.
Now working all ok 🙂 Job done!