How to format Ericsson XPERIA X1

Here are the steps:
1-turn off ur phone
2-remove the battery and replace it back
3-press and hold down the left and right silver buttons just under the screen
4-with the stylus press in the hole on the right side of the battery
5-After 10 sec you will be prompted to press "R" on ur Slide-out keyboard
6-if successful press the space key on ur Slide-out keyboard to finalize changes