Highlight ' Yes - Wipe Dalvik Cache' and press the Power button. Select ' Wipe Dalvik Cache' and press the Power button. Select ' Yes - Wipe cache' and press the Power button.
Highlight the ' Wipe cashe partition' and press the Power button. Select ' Yes - delete all user data' and press the Power button. From the Recovery mode menu select ' Wipe data / factory reset'. Use the volume buttons to navigate through the menus and press the Power button to make a selection. The phone will boot into Recovery mode. Press the buttons: Power + Volume up (or Volume Down) (+Home) simultaneously for 10 seconds. A universal option is to try pressing the following keys. Depending on the phone manufacturer, press a specific combination of buttons on the phone body. Download the firmware and place it on your phone's SD card. The general firmware process described below is for ZIP files. By default, stock Recovery is installed in the devices, which means that first you need to install the ClockWorkMod Recovery utility itself. The rich functionality of CWM Recovery allows you to perform many manipulations with the device, including rolling the firmware.
