CGMB～How to replace EIS W221
1 Use CGMB or CGpro or other tool to read out your original EIS data
( SSID , VIN , EIS password ,key position information )
2 Wipe your donor EIS (No need do it if your EIS are new )
3 Write the original data into donor EIS
4 Add a new key to activate the donor EIS (you old key should still can work too)