Xhorse VVDI Prog EZS Adapter for Benz EIS/EZS W164 W169 W203 W209 W211 W215 W639 is in stock now, and it can work with VVDI Prog/ key tool plus. Here is one review about VVDI MB Tool and VVDI Prog Program benz W203.
Reading data and cloning EZS Mercedes W203 in bank with Vvdi prog adaptter and later programming again with VVDI MB Tool and Mercedes Benz gateway simulator.
Take out the EZS
Connect EZS with vvdi prog and ezs adapter
Read the data with vvdi prog, save data
Use vvdi mb with gateway, load dump file, add new key.