S1Boot Fastboot driver is specific to older Sony Xperia devices. It allows your computer to communicate with the phone while it's in Fastboot mode—a state necessary for unlocking bootloaders or flashing custom firmware. 1. Enter Fastboot Mode
Without the correct driver, this device will sit under "Other Devices" with a yellow exclamation mark, preventing your computer from communicating with the phone. This guide covers what the driver is and how to install it. s1boot fastboot driver
. When an Xperia device is connected to a computer in Fastboot mode (usually indicated by a blue LED), it identifies itself to the operating system as "S1Boot Fastboot". The driver allows the PC to send low-level commands via the command prompt (using fastboot.exe S1Boot Fastboot driver is specific to older Sony