"The serialNo has not been registered"
Recently,some customers get similar message from Launch scanner.
Two tips for you if you got the message from Launch CRP123E CRP129E.
>>>1. Try to use the scanner to connect the WIFI from your cellphone, then scan cars.
It should be fixed if you finished step 1
>>>2. Try to Clear cache in settings.Please follow below video to set up it.
No worry, we will replace a new one for you if you did it all but still not working.