0.9.18 ((top)): Flashtool
The standout update in version 0.9.18.1 was the integration of a tool that allowed users to download Xperia firmware files directly from official Sony servers. Before this, finding the correct "FTF" file (the Sony firmware format) often meant scouring forums like XDA Developers and hoping for a reliable, third-party download link. With this update, Flashtool became a one-stop shop for both obtaining and installing software. Why It Matters
For those unfamiliar, here is a concise guide to flashing a stock ROM using this version. flashtool 0.9.18