Airbag Service Tool V3.9 ((better)) -

One of the biggest hurdles in airbag resetting is the integrity check (checksum). If the reset doesn’t correct the checksum, the vehicle’s computer will reject the new data. The Airbag Service Tool v3.9 includes an automatic checksum correction and validation feature, ensuring that the module accepts the cleared file as legitimate.

Wide variety of European, Asian, and American car brands. airbag service tool v3.9

It scrubs the "locked" status from the module, returning it to a "virgin" or factory state. One of the biggest hurdles in airbag resetting