You must have the Xperia XZ Premium Drivers installed on your PC. Step 1: Download Official FTF Firmware
Flashing a stock ROM will erase all user data , including photos, contacts, and apps. You must have the Xperia XZ Premium Drivers
Use a high-quality USB Type-C cable to maintain a stable connection. You must have the Xperia XZ Premium Drivers
The remains a powerhouse for enthusiasts, but software issues like boot loops or the desire to downgrade from Android Pie to Oreo often require a clean install of the official stock ROM. Using an FTF (Flash Tool File) with the community-standard Flashtool is the most reliable way to restore your device to its factory state. Prerequisites Before Flashing You must have the Xperia XZ Premium Drivers