Select , Fastboot Drivers , and specifically Xperia XZ Premium from the list.
XDA Developers forum users have confirmed working builds (e.g., CE1, RU, UK Generic). Always compare firmware region and customization number (e.g., 1310-4335) to your device’s original region for best modem compatibility. The Ultimate Guide to the Official Sony Xperia
: Flashing a stock ROM typically erases all user data. Back up your photos and files before starting. Central Europe 1 (1312-4818) UK (1312-4814) Customized US
Install Flashtool and during setup check: Flashmode Drivers Select , Fastboot Drivers , and
No. Flashing a verified stock FTF does NOT relock the bootloader. You must use fastboot commands to relock manually. Keeping it unlocked is fine for stock, but some apps (Netflix, Google Pay) may complain if SafetyNet fails.