This guide provides an educational overview of what the S1 Unlock Tool is and the standard procedures for unlocking Sony Xperia devices. The S1 Unlock Tool (often associated with paid services like Chimera Tool, SigmaKey, or standalone "S1" modules) is software used to remove the "Bootloader Lock" on Sony Xperia devices without using the official Sony method. J N Green Technical Drawing Pdf [DIRECT]