The first question asked here is wether you need a computer... you need a computer and also a BMW multitool.... and this works on some, but not all cas modules.. mine has worked great on cas2 and some cas3+, but has failed on later model cas3+ units... BMW has updated the programming to thwart thieves. If the BMW you are working on has been to the dealer in the last eight' months, you will probably have problems...
Replied by Betsy on Sep 9, 2014
Hello Dear
Thanks for visit
This tool should together use with the BMW Multi tool ,it works almost cars
And this tool is always update ,if you bmw multi tool bought from us ,you can downlaod our newest software version update
Any questions,feel free to contact us
Betsy