If the device is having any custom recoveries such as CWM/TWRP already installed then backup data using the recovery.Ĥ) The battery of the Galaxy Grand should have above 80% charge.ĥ) The device should be factory unlocked and not locked to a particular carrier.Ħ) Rooting the phone will void its manufacturer's warranty.

ģ) As the tutorial might wipe out all data of the phone, create a backup. 1) Install USB Driver for Samsung Galaxy Grand DUOS to connect the Android device with the computer.Ģ) Enable USB Debugging Mode on phone to connect it with computer and use Android SDK with it.