: Turn off your phone, then press and hold Volume Down + Home + Power until the warning screen appears. Press Volume Up to continue.
Note: Restoring NV data is a high-level procedure. Ensure your phone is charged to at least 50%. Prerequisites installed on your PC. Odin3 (for flashing firmware/TWRP).
The was a flagship device released for T-Mobile USA. Known for its curved display and powerful Exynos processor, it remains a popular device for repair technicians and hobbyists due to the availability of aftermarket firmware and repair tools.
A common misconception in repair communities is that one can simply download a generic NV file and flash it to repair a device.
adb shell su dd if=/dev/block/platform/15570000.ufs/by-name/EFS of=/sdcard/nv_data.bin exit adb pull /sdcard/nv_data.bin