After having been released for less than a week, and with a forum added only a few days ago, the Sony Xperia S is the most recent device to find a home on XDA. Even so, we’re already pleased to bring you information on how to unlock and relock the bootloader, as well as how to root your brand-spanking-new device.
XDA senior member DooMLoRD put together a very comprehensive tutorial on dealing with the bootloaders, which is based on lollylost’s similar tutorial for the Xperia Arc. There are quite a few steps to achieving the end result, but they are clearly explained, with all the necessary links provided. The actual method for unlocking is via the official SonyMobile site, so it’s only fair that we also show some thanks for their developer friendly attitude. DooMLoRD continues in his second post, and explains how to relock your bootloader using FlashTool.
Meanwhile senior member Bin4ry makes sure you’re able to get root access by providing a pre-rooted system.img, which is to be flashed via fastboot. After a quick reboot you should have root. He goes on to say that a more convenient method is sure to follow.
If you are the proud owner of a shiny new Xperia S and can’t wait to start tinkering with your device, DooMLoRD’s tutorial and Bin4ry’s rooting thread are undoubtedly the first places you should visit._________