Flashtool 0.9.18 — Free

Modern Windows versions block unsigned drivers. You must disable "Driver Signature Enforcement" in Windows settings before installing Flashtool drivers.

The release of version 0.9.18 brought several significant enhancements to the Xperia modding toolkit: flashtool 0.9.18

Its core capabilities include:

Enable USB debugging on your Xperia device. Go to > Developer options > USB debugging . Modern Windows versions block unsigned drivers

"Authentication failed" / "Cannot flash: locked bootloader / signed images" Developer options &gt