Start VVDI MB Tool software,choose EIS tools,connect with OBD way with car and VVDI MB Tool,vvdi mb tool with computer via USB cables.
Read key password.After get key password,copy it.
Choose OBD mode,and choose chassis,get erase password,paste key password.
Read EIS data.
After read successfully,save the data.
Choose prepare key file.
Load EIS file,the data you receive in previous step.
Then prepare key file.Save key file.
Choose read write key,write the new key.