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There are many official ways how to update firmware on your Sony (Ericsson) XPERIA smartphone. You can use PC Companion on Windows computers or you can use Sony Bridge for Mac on Apple computers. But sometimes it is better to use unofficial way - you can get latest firmware as its released for your country etc. Androxyde Flashtool is the best PC utility, which allows you to install new firmware, decrypt firmware files from Sony or relock bootloader on your phone.

This program was originally made to flash sin files downloaded by SEUS or PCC. Based on a command line tool written by Bin4ry (Andreas Makris), I brought a user interface to sin files flashing. We worked together to add more features to the tool such as rooting methods implementation or TA backup / restore. Then I took the lead and got some advice and help from him occasionally on some features like rom cleaner or bootloader unlocking. From time to time, sin files have been bundled into what is now well known FTF (Flash Tool Firmwares) and more features have been implemented. But flashing firmwares is still the core of Flashtool (that is updated at least to follow Sony improvements around sin files) and the reason of its name. Flashtool can also easily unlock the bootloader of the phone using the BLU icon as far as the bootloader of your phone is unlockable. The flashing feature as well as bootloader unlock feature are available whatever the phone is recognized or not by the application. What is only mandatory for flashing is to own the FTF file according to the device you want to flash it on. You can download latest Androxyde Flashtool 0.9.19.10 for Windows from Google Drive, Mega, Ulozto or from Flashtool Homepage. And its available for Linux and Mac too (first install version 0.9.19.8 and than replace X10flasher.jar in Flashtool folder)

Why should I use flashtool?
- once bootloader unlocked, official sony tools do not work anymore
- using official sony tools, you can only upgrade. No downgrade possible
- using flashtool, you can choose what to flash and what not to flash