Once I was in the same situation you are in now, my car was 2002 s4 tip AA-box Since there is no xdf file for my ECU back then here what I did and here what you should do
you have to generate xdf file to your ecu #-box

1 you need a hex editor to do hex compare best software is called Scooter Beyond Compare

2 you need m-box bin file and the xdf

3 tuner Pro software is needed to generate and edit your maps

NOW

open the editor go to > session > new session > hex compare

load m-box to the right your ecu-x to the lift
go to tuner pro -open xdf and m-box bin
let's say you need boost map
in the tuner pro  copy the address hex from boost map now go to hex editor >search >goto > put the hex address
the hex editor will bring both maps against each other you copy the address that appears under your ecu file name put it in the address in the boost map

that's how i figured mine

the blue cable with a ftdi chip it's about 5$ from AliExpress