Those who know how to won't sell their solution unless they're cheap whores or they copied their solution elsewhere LOL

Back to the dark ages; you won't ever find anyone else willing to break down and document anything publicly in any of these ECUs any more.

I'm certainly done.

Why exactly is that may I ask? Is it because most people never give back to the community or claim others works as their own and never give credit?
Understand that this platfrom ( rs3 ) is quite new and people that  have access to the proper "methods" asked in OP wont just share them yet or something along of those lines since even with ME7 from the looks of it , 10 years still had to pass before stuff started popping up such as this forum and fr's and stuff. ( ofcourse people most likely had access to those files way before they found their way here ,probably idk)

Better off joining a winols of chiptuning group on facebook and asking. Clearly your not going to get the answer here.