![]() ![]() This ONLY works on phones with LOCKED bootloaders. ![]() Making a backup allows you to modify your existing firmware, install custom ROMs, or otherwise tweak your Xperia and keep a copy of the official firmware for restoration, if/when needed. Once the firmware is downloaded through Update Service, you can copy those files to another folder and subsequently decrypt and extract the files to create a FlashToolFile (.FTF extension) for use with Bin4ry’s FlashTool. This process forces Update Service to download the LATEST EXISTING OFFICIAL firmware and to reinstall it on your phone. You CANNOT use this method to backup an older firmware. Again, this will download the LATEST firmware available for your device or SI build. ![]()
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