[cheshired5]

Short answer is there is no definitive procedure across the board.

Longer answer is that some injectors are plug and play, some require an ECM recode if the Class number is being changed, most don't have Class numbers, some require pairing to the car and some require a dealer only software download.

Luckily, there will be one definitive procedure for your exact car which will be detailed in the injector change procedure listed in Information >Repair >Removal, replacement and overhaul >Engine and Mountings >Fuel system in Vida.
If it says download software part number xxxxxxx you will need to visit a dealer.
If it doesn't say that, just follow the Vida procedure.

If your car has been read by Vida just click on it on the Vehicle Profile screen and Vida will automatically only show the parts catalogue, technical data and workshop manual for your exact car.

If you leave the vehicle profile blank and use the search facility in Vida it will show all possibilities for all cars which will obviously create more confusion.