Ok, sorted some of it out, my tablet was connecting to my neighbours WIFI hence not being able to download the file required.
When the file downloaded it allowed me to continue into the brake service menu but the windback box was not highlighted, nly box available was to activate the parking brake.
Selected the activate brake box, it then comes up and said function not supported.
Not a lot of good then 1 year old tablet won't do brake pads on a 3 year old car.