hdi never starts first time

[HDi--Power]

you need to load the original and then reload the mapped one

What if the car isn't mapped, do you read the map that's on the car and then just load that back on?

It may work but I have never tried it that way, all you are aiming to do is wipe the ecu memory clean and remapping is a pikey way of doing it in the absence of proper diagnostics