Most W204 W207 W212 ESL will damage with EIS. In this case, there are two possible reasons and solution:
ESL motor is damaged and need to replace a new motor
NEC chip is locked, theoretically it can be unlock, actually it needs to replace new ESL.
The updated NEC adapter is for removing the NEC from MBZ keys and renewing them.
On versions 51 and 57 you can extract the password without taking the EIS out of the vehicle if you have a damaged key or one that quit working.
New CAS Plug work together with VVDI 2 to support more BMW cars
1. It connects to device OBDII port,
2. It is used for EWS, EWS 2, 7 Series CAS1/CAS2 plug and CAS3/CAS3+ plug.
3. By using CAS Plug, you can connect CAN LINE manually, support 12V.