: Go to Tools → Backup TA before unlocking the bootloader. This saves your DRM keys. Restoring the TA partition later (using Tools → Restore TA ) will bring back those original keys.
Open Flashtool (choose FlashTool.exe for 32-bit systems or FlashTool64.exe for 64-bit systems). Click on the in the top-left corner, select Flashmode , and click OK . 3. Configure the Flash Parameters
The tool works by establishing a direct communication channel between a computer and a mobile device via USB, using protocols such as Fastboot and Sony's proprietary S1 protocol to read from and write to the device's storage partitions. Developed in Java with JNI calls to system-native libraries, Flashtool achieves cross-platform support while maintaining deep-level hardware access. flashtool 0.9.18.6
| Feature | 0.9.18.6 | 0.9.23+ | |---------|----------|---------| | Xperia Z1/Z2/Z3 support | Excellent | Partial (driver issues) | | Xperia XZ series support | No | Yes | | Automatic driver installation | Manual in some cases | Improved | | Adware/bundled offers | None | Present in some builds | | FTF creation reliability | High | Medium (strict naming) | | Windows 11 compatibility | Via compatibility mode | Native | | Root/Recovery auto-install | Yes | Deprecated (different methods) |
: Disconnecting the device or losing power during the flashing process can result in a hard brick. : Go to Tools → Backup TA before unlocking the bootloader
Note: The developer Androxyde stopped active development after version 0.9.24.2 (2017). Version 0.9.18.6 is now considered "legacy stable" and is preserved on XDA-Developers forums.
Flashtool is the definitive desktop software for modifying Sony Xperia smartphones. Released during the peak era of Xperia customization, version 0.9.18.6 remains a vital release for servicing legacy devices. Open Flashtool (choose FlashTool
Ensure the Xperia phone has at least a 50% charge to prevent it from shutting down mid-flash.
The 0.9.18.6 release introduced several significant changes and bug fixes compared to its predecessors. Understanding these is key to utilizing it effectively.
The "Flashtool-drivers.exe" (found in the installation folder) must be used to install Flashmode and Fastboot drivers.