Flashtool-0.9.18.6-windows < 2025-2026 >

If you backed up TA before unlocking, use Flashtool → . This requires the phone to be in flashmode and the backup file ( .ta extension).

Newer versions (0.9.23.0, 0.9.24.0, 0.9.26.0) exist. However, many advanced users deliberately seek out for three primary reasons: Flashtool-0.9.18.6-windows

(2014 series and earlier, such as the Xperia Z series, Xperia X10, Arc, and Neo). Why Use This Older Version? If you backed up TA before unlocking, use Flashtool →

Move your .ftf firmware file to the C:\Users\YourName\.flashTool\firmwares folder. 0.9.26.0) exist. However

Ensure you have the .ftf firmware file. You can download these directly using the built-in XperiFirm tool (click the black 'X' icon).

Even with stable software, issues can arise. Here are solutions to the most frequent problems: