Official Sony Xperia Xz Premium G8141 Single Sim Stock Rom Ftf For Flashtool Verified -

: Only flash firmware for the G8141 . Attempting to flash Dual SIM (G8142) firmware may cause hardware conflicts.

Do not proceed if checksums do not match or if the archive contains unexpected files (malicious or unrelated binaries). : Only flash firmware for the G8141

After completion, reboot and allow ~5–10 minutes for first boot. : Only flash firmware for the G8141