hi i try to flash a used egs zf6hp19 the used egs assembly part #7564084. the original egs has assemly part #7572855 both have the same hard ware with the same bmw#7563275 i used expert mode and has a fault message ecu flash complete with error ref 8347 can you please help. The original car was 2007 530i with n52 engine. the donor is 2006 325i with e90. Thankm you