VVDI Mercedes Renewed Used W221 EIS for Another W221 AKL

Instruction: if you have used EIS with a working key, you can do like this for W221 all keys lost using VVDI Mercedes programmer:

1. read all key lost EIS data-> save EIS data
2. read used EIS data enter password, get erase password->renew used EIS.
3. load step1 EIS data to renewed EIS with password->write EIS data
4. load EIS data(with key password)->prepare key file
5. input new key to device IR reader->load key file->write
6. insert new key to EIS->EIS will learn the new key->key learn success