Problem:
Tried to clone BMW MSS65M6v10 DME using Yanhua Mini ACDP2 but failed. ACDP said the chip is encrypted.
It cannot clone all MSS65 DME versions. If the chip is encrypted, cloning that DME will not be supported.
The MSS65 (Siemens, used in ~2006–2010 E60 M5 / E63 M6) has protected/encrypted ISN/SK data (immobilizer secret key) and larger memory areas that block standard OBD tools from full reads/writes.
Later MSS65 units can have BDM partially restricted (rare on M6 V10, but test read first).
Tools like KESS V2/KESS3 or Galletto can flash most of the memory and work for basic data transfer, but the ISN stays locked — so a donor DME won’t start the car without extra steps.