In Sony you cant unlock the pattern lock via boot loader menu because the Boot loader locked in that for that we have to download the SONY UPDATE SERVICE TOOL in that you can see your smart phone model you can select your model and then it will guide you to enter the update mode just follow the steps carefully and then it asks any update is available or else re update the current software your wish to update or re update the software again to unlock your SONY smartphone and enjoy.http://www.sonymobile.com/global-en/tools/update-service/ click this link for downloading sony update service..