You'll by the Map for €29, Unlock the car, then on the Fastchip Software there are 3 main option on the left, Read ECU, Write ECU and Calibrate ECU, these are the steps you follow when uploading the Maps,
1st, Click Read ECU it will take about Half Hour and give you a shot of your ECU data, click the button on the Interface that says Screenshot, just paste it into an email with your order number to Henk and He'll Post you the Map.
2nd once you have the Codes, you'll Click Write ECU and select the File ending in 8400 or something like that and it will take about 20 mins to do so.
3rd Click Calibrate ECU and select the Map file that Henk Sends you, takes about 20 mins again.
Then Job Jobbed.
Makes sure you connect a battery Charger, if it goes flat in either the Laptop or Car Battery during the process you are fucked, and disable all power saving functions on laptop.
Henk will send instructions and there is a very good guide on here.
Enjoy, I'm off to begin my 5 day weekend. it's piss easy dude.