[Stock ROM] Official Sony Xperia XZ Premium G8141 Single Sim (FTF) – Verified

Device: Sony Xperia XZ Premium (G8141) ROM Type: Official Stock Firmware (FTF) Sim Variant: Single SIM Status: Verified & Flashable via Flashtool

1.2 Xperia XZ Premium G8141

• Xperia XZ Premium – The device codename "Maple".
• G8141 – The specific model number for the Single SIM international variant. (Note: The dual SIM variant is G8142. Flashing G8142 firmware on a G8141 can cause radio/modem issues, and vice versa.)

Q1: Will this stock ROM lock my bootloader again?

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.

Q4: Where can I find the latest verified build number?

• Android 8.0: 48.1.A.2.170
• Android 8.1: 48.2.A.2.111
• Android 9.0: 52.1.A.3.49 (most recent and recommended)

Grab the 52.1.A.3.49 build for stability and security patches up to October 2019.

Sony Xperia XZ Premium (G8141) Single SIM — Official Stock ROM (FTF) for FlashTool — Verified Guide

Step 3: Launch Flashtool and Select Flashmode

1. Run Flashtool as Administrator.
2. Click the lightning bolt icon → Select Flashmode.
3. On the left pane, you will see your FTF listed under “Firmwares.”
4. Click on it – the right pane will show partitions (system, userdata, cache, etc.).