Easily install official .ftf firmware files onto your Xperia device.
Not for flashing official Sony stock firmware (FTF files). However, to flash custom kernels, custom ROMs, or any non-official software, your bootloader must be unlocked . sony flash tool 0.9.23.2 download
Includes a TA viewer and a custom TA file generator for flashing. Easily install official
It is remarkably stable for devices released between 2013 and 2017 (the Xperia Z through XZ eras). FSC Script Support: Includes a TA viewer and a custom TA
Provides integrated tools to gain root access on specific older firmware versions.
Launch Flashtool (Use FlashTool64.exe for 64-bit Windows operating systems). Click the in the top-left corner. Select Flashmode and click OK .
I couldn’t find an official or trusted source for specifically. Sony’s official tool for flashing firmware on Xperia devices is New Flasher (by Androxyde) or Emma (Sony’s official flash tool for developers).