Please check this thread out, first post even got the video about basic coding:
https://f15.bimmerpost.com/forums/sh....php?t=1033991
1.Just difference between the FW version of your car and firmware released.
2. Do no use direct connection.
3. Should be along the line of Connect => Read FA (VO) => Activate FA (VO) => Read SVT (VCM) => Left-Click on desired ECU => Click on "Detect CAF for SWE" => Select the CAFD from latest I-Level shown => Select OK => Right-Click on ECU (the ECU itself not the underlying CAFD) => Select CODE. But I am not 100% sure if FZD is codable, you should ask in the coding thread.