B800 is what you have got (Yellow body with a blue inlay).
I ve got the same, yes it does work and very well-twice in 6 months it has reset the airbag:
you should check all seats are in good order, a leather panel front passenger seat containing the air bag had ripped on the stitching and then once repaired re set the air bag and problem solved.
Then the fuel gauge needle and temp needle would flicker on mine, then the airbag light returned . i found the car battery was original from 2003, so 10 years old!
since fitting a new battery and the air bag reset, no faults since or flickering gauges.