Once the console says "Flashing finished" and "Phone rebooted," you can disconnect the cable. The first boot may take up to 5 minutes—this is normal.
Once completed, Flashtool will show a status message reading: "Flashing finished. Please unplug your device and start it." Post-Flash Instructions & Troubleshooting The Initial Boot
Because Sony devices use a unique partitioning scheme, the FTF format allows the FlashTool to parse these files and write them to the exact correct sectors on the phone’s internal storage. A "verified" FTF file means that the archive has been checked against official Sony checksums, ensuring that the files have not been tampered with, modified, or corrupted during download.
Understanding these terms is crucial before proceeding.
In the "Wipe" section, make sure APPSLOG , CACHE , and DATA are ticked for a clean installation.
You can confirm the FTF is because:
: Usually bundled with Flashtool, this tool is the standard for downloading verified official firmware.
: Install "Flashmode Drivers" and "Fastboot Drivers" from the C:\Flashtool\drivers folder before connecting your phone. Considerations
Manages cellular connectivity, Wi-Fi, and Bluetooth.
allows users to restore their device to factory settings, fix software issues like boot loops, or perform version upgrades and downgrades. Key Device Features (G8141) Industry-Leading Display
Once completed, close XperiaFirm. FlashTool will automatically unpack the downloaded files and compile them into a single, verified firmware file. Step 2: Configure FlashTool for Flashing Once the console says "Flashing finished" and "Phone
Ensure you are using the latest version of Flashtool and that drivers are installed. Device Not Recognized: Try a different USB cable or port.
Navigate to the Flashtool installation folder (usually C:\Flashtool\drivers ) and run Flashtool-drivers.exe . Select Flashmode Drivers and Fastboot Drivers , as well as specific drivers for the Xperia XZ Premium .
Version 0.9.24.2 or higher is required for XZ Premium.
In the "Wipe" section, it is recommended to check APPS_LOG , USERDATA , and CACHE to ensure a clean installation. Initiate Flash: Click Flash .
If Flashtool does not work, consider using Newflasher , an alternative tool recommended for newer Xperia devices. Please unplug your device and start it
to its original state is a common requirement, whether you are trying to fix software issues, unbrick a device, or remove custom mods. The most reliable method is to flash the official, verified stock ROM (FTF file) using Sony Flashtool.
Download and install the official Sony USB drivers on your PC.
To help provide the most accurate advice or specific firmware variant for your device, please let me know:
ℹ️ Older Android 8.0 Oreo builds (e.g., 47.1.A.16.20) are also available if you prefer downgrading.