If you are using Samsung Galaxy Ace and want to unroot your device you are on a right place below you can see a guide for this purpose, here I’d like to say that the below guide if compatible Android 2.3.5/2.3.4/2.3.3 Gingerbread. Before you get started make sure that you have manage your back-up because below steps can damage your valued data. And the below steps are for those users who are using model number S5830.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.
First of all you need to download ‘.zip’ file from here. Using a USB Cable connect your device to PC and copy it to your SD card root folder.
Now holding down Middle key and power ON key at the same time to Reboot device in recovery mode.
Select the option “update from SD card” & verify to press the middle key and also select the file “unroot.zip” file from memory card.
It will take several seconds, you just need to wait until the confirmation screen comes.
In the end click on “reboot in normal mode” to restart the phone