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I won't be of much help but:
I have done this retrofit on my 2012.12 prod 335.
i purchased a used szl for an f10 and it was pretty much plug and play. zero coding involved zero error codes after the swap.
for what it's worth the f10 szl is known to work just fine in the f30 except for the heated steering wheel switch which requires a diode + resistor soldered to make it work. there is a write up about it on drive2.ru.
if you have the option to return the szl and try a different part nr.
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