ZJchao(TM) Professional Key Programmer for AK90 Auto Key Programmer Key Maker + for EWS1,2,3,3+, 4.3 AK90 BMW KEY-PROG increased by 1995-2009 in all BMW EWS read the key information functions;improved some of the EWS to read and write speed. This product safe and effective, is the key to match the best tool for BMW. 1. Directly reading data dumps from MCU which marked 1D47J , 2D47J , 0D46J ,2L86D without removing MCU from circuit board , easy to do yourself. 2. With the help of software you can renew , lock or unlock keys as well. 3. Programming original chips "EML 10030A" for making keys. 4. Identifying keys for all EWS and CAS , showing VIN , key No. It can change VIN, can change mileage in ews.