Nothing is impossible for me". I said I can handle it by myself even it must take a little long time better than I've to pay those expensive money to mobile shop. The link below is how to Unroot Samsung Galaxy Tab3 10.1" step by step that I can found out from Internet. "If you have Internet you can learn everything from it" http://www.editandroid.com/unroot-samsung-galaxy-tab-3-10-1-easy-method/