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hi I'm new to this forum and i have 21.08.2008 e92 M3 according vin number decoder, i would like to change i drive to new version. i read all the the post here that me me confuse which part number should i order for my car there are -048, 050, 309, and 311. which part should i order? because in indonesia dealer can't update the software.
thx
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