Install the necessary drivers for your Xperia device. You can do this by downloading the Sony USB driver and installing it on your computer.
Unlocking or re-locking the bootloader (required for Custom ROMs). Rooting: One-click root tool for many legacy kernels. flashtool 0.9.18
You can extract kernel.sin and recovery.img from FTF files or custom builds, then flash them in fastboot mode. Install the necessary drivers for your Xperia device
Are you looking to flash a , or do you need help troubleshooting a driver installation error ? flashtool 0.9.18
Keep a copy in a Windows 7 virtual machine, but do not reach for it first. Use the latest SP FlashTool v5 for modern devices, and fall back to 0.9.18 only when the new tool refuses to cooperate.