The answer to the question is NO. with Yanhua Mini ACDP, the FEM/BDC key programming process doesn’t need to weld, you don’t need to remove ST95256 from FEM.
Here comes the images:
Share a Youtube Video on how to use Yanhua Mini ACDP to program key for BMW FEM /BDC when all keys Lost:
Yanhua Mini ACDP add key for BMW FEM /BDC:
FYI, you need have both Yanhua Mini ACDP and module 2 to add key to program new key for FEM /BDC.
Yanhua Mini ACDP: http://www.obd2shop.co.uk/wholesale/yanhua-mini-acdp-programming-master.html