Dont think it has anything to do with money... you just visit an official MTM dealer and take it off.
Maybe, and I say maybe, you need to go to the same dealer the S3's previous owner used for the upgrade cause they have downloaded and saved the original program, that was factory fitted to your car!
Good luck!
PS* I still dont get the reason why to downgrade... is there anything wrong with the car? and you need to visit an official garrage but you cant show up with an upgrade? I am all ears.
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