Flashtool is a S1 flashing software that works for all Sony phones from X10 to Xperia Z Ultra. They all use the S1 protocol for flashing firmwares.

This program was originally made to flash sin files downloaded by SEUS or PCC.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

Sony Ericsson W150i Flashing Tool

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.

Sony Ericsson W150i Flashing Tools

Join Date Jul 2008 Device K750i - K810i - XPERIA arc - XPERIA tipo dual - Xperia Z Ultra Posts 2,314 Thanks 21 Thanked 282 Times in 271 Posts. We recently reported on a fantastic new tool called XperiFirm, which allows you to browse and install the latest firmware files for any Sony Xperia device. We have had a number of people get in touch asking us how they can use those files to flash that firmware onto their handset using FlashTool. Easy way to free your Sony Ericsson Yendo W150 or W150a Yizo from one network provider. Unlocking dismiss 'Insert correct SIM car.