How to Unroot the Samsung Galaxy Y Duos S6102

1. Download the unrooting file from here and save it to the computer.
2. Connect the device with the PC and copy the file you just downloaded into its SD card.
3. Remove the phone from the computer.
4. Turn it off and reboot in recovery mode. Do as explained above (take a look on the how to root section, step 7).
5. Then, choose “Install Zip from SD Card” followed by “Choose Zip from SD Card” and get the file you copied in step 2.
6. When the operation is completed you will be back on the recovery mode menu.
7. Select “reboot system now”.
8. that's sit.