What or IMEI status do you see right now on your device?
Launch your preferred service tool (e.g., Z3X Samsung Tool Pro). Select the model from the device list. Navigate to the Repair or Backup/Restore tab.
Prerequisites
If you do not have a personal backup, you must write a clean NV data file (often referred to as a "Security file" or "NVM/NV data" file) using a service tool.
To write the file to your Galaxy S6, you will typically need: For a stable connection. sm-g920t nv data file
Before flashing any custom ROM, custom kernel, or carrier unlock script, utilize TWRP or ADB to pull a raw copy of your EFS/NV partition.
A word of extreme caution. Searching for “sm-g920t nv data file download” will lead you to sketchy file-hosting sites, YouTube videos with password-protected RARs, or forum posts from 2017. Here is why you should be careful: What or IMEI status do you see right now on your device
A powerful alternative to the Z3X tool. Since version 1.9.5 released in 2015, Octoplus has added explicit support for the SM-G920T, allowing technicians to write firmware, read/write the security zone, read/write EFS, and reboot into Download/Recovery modes.
Download the specific that matches your device's binary level (e.g., Binary 2, Binary 4, etc.). Flash the combination file using Odin in the AP slot. Your phone will boot into an engineering user interface. Step 3: Enable USB Debugging and DM Mode Navigate to the Repair or Backup/Restore tab