How to unlock Rear Camera/Rear Speaker Facility in Medianav version 4.0.6/4.0.7 THROUGH PENDRIVE.it will be complete in two step.
Download the file named "first step" from this link.
For Purchase Package click on link.. http://www.kwidcarsolution.in/in/p/Media-Nav-Unlock-Package-for-KWIDMeganeDaciaDusterLodgyFor-MediaNav-Version-188.8.131.52.7/44
Download the file Named "second Step" from the download link mention below:
Now your Medianav Unlock.