Use WinRAR, 7-Zip, or Bandizip to extract the archive to a folder. extracting directly to C:\Program Files (Windows restrictions may block drivers). Instead, use C:\Flashtool or D:\Android\Flashtool .

: You must install the Flashtool drivers (found in the drivers folder within the Flashtool installation directory). During driver installation, select "Flashmode" and "Fastboot" drivers, along with the drivers for your specific phone model. Firmware : Have your desired .ftf firmware file ready. Step-by-Step Guide Extract and Install Extract the Flashtool-0.9.22.3-windows.rar archive.

: When prompted, turn off the phone and connect it to the PC while holding the Volume Down button (standard for most Xperia devices). XDA Developers Forum or instructions on disabling driver signatures

For modern Xperia 1/5/10 series, use newer Flashtool. For classic Xperia legacy devices (2011–2016), 0.9.22.3 is superior .

: Flashing will likely wipe all user data and content.