ok Actron 9135 is a toy for reading codes. you can read these codes in secret menu in your tacho/dashboard. so u dont need codes reader what i am talking about is full range OBDII interface to use with laptop. with all options like OEM BMW dealer has. reading f codes, live data, total diagnostic, progarmaing airbag, radio,...
lots of them tust cant read data from car. that is problem. i had before obdI interface and wotked perfectly. but OBDII i bought 3 diferent tried with 3 different laptops and 2 cars. none of them could work without errors.