Hard Reset SONY ERICSSON K550i

  1. Make sure that device is turned on. Hard Reset SONY ERICSSON K550i
  2. Select Menu > Settings > General > Master reset.
  3. Mark Delete all user installed applications.
  4. Select Delete and confirm it by pressing yes.
  5. Enter the phone lock code and select Done.

Hard Reset will erase all of your data
All described operations you are doing at your own risk.

Help! This doesn't work