This is a very useful tool for downloading official firmware for Sony android smartphones and tablets. Downloading firmware using this tool gives you a huge advantages since the tool offers firmware directly from official Sony service.
The good thing with this tool is that it allows users to preview all available firmware for the selected device and user choose which version to download but there comes a bad side of the tool is that the tool can only download firmware but it can not install the firmware to device thus after using the tool to download firmware then you need to find another tool to install downloaded firmware to your smartphone or tablet and also the tool does not come with Usb drivers so you need to download and install Usb drivers at your own though it is not an issue to consider at all since drivers can be simply downloaded and installed
The tool can be used to check for firmware update for Sony smartphones and tablets by simply run the tool and connect your xperia smartphone and the tool itself will detect the phone and tells you if there is an update for your connected device
The tool has no ability to update itself so you will need to check for update and install it when needed since new update will contain new phones as well as more firmwares for existing models so always prefer checking for updates.
The tool supports all windows versions, supports huge number of sony devices, can be launched while offline but you will need stable internet connection to download firmware
After downloading firmware with this tool you better use Sony Flash Tool to install the downloaded firmware to your Sony smartphone or tablet since the tool is safe with less errors