Radio Unlock for Jeep&Chrysler

Generates radio unlock code for Jeep and Chrysler by its serial number. There is a fee requiered for each code generation. NOTE: Works only if device supplier code starts with 17719. Other suppliers not confirmed. Returns a 4 digit code made of digits from 1 to 6. The bug, mentioned in the comments, when the app returned just 2 digits is now fixed.