OBDSTAR X300M mileage tool file authorization failed, maybe you are facing this questions like this, but don’t know if should have to update the device,

And the error picture like this:

customer download the Ford in V30.26, but cannot use it,

Tech advice:

You should check the device SN number, back us, we will check if  this SN number have opened related authorization, if so, just active it again.
OBD2 Odometer Correction Tool X300M configuration questions, need back us the unit to repair.