I have bought samsung a5 (2017) in used and it's rooted i want to unroot this device kindly help me out !!! i can use this phone with knox security thanks.
By Reflashing firmware.
Download its official firmware from sammobile and install it.
I don't know how to install it i have downloaded the software kindly guide me.
Do you a laptop or pc?
Yes i have laptop
Watch this video and follow all steps.
Samsung Galaxy A52017 software download new