Important Notice

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Download & Technical Resources:

Open Odin and load the firmware files into their respective slots (BL, AP, CP, CSC).

NVData:

Stores network-specific settings.If these files are corrupted, the phone may show "Baseband Unknown" or fail to register on a cellular network. 🚀 How to Use These Files

empty NV dumps

However, you can find or generic repair files for the SM-A156E on professional GSM forums and repair tool servers (e.g., Z3X, Octoplus, Chimera Tool, UnlockTool). These files have the IMEI fields cleared (set to 00000000000000) so you can write your own IMEI back.

Pro tip: The NV file is usually inside a folder named efs_backup or nvdata . Look for files with no extension or named nv_data.bin . Do not confuse it with nv rebuild scripts.

  1. Root your device (requires bootloader unlock via Odin + Magisk patched AP).
  2. Install Terminal Emulator.
  3. Run the following commands: 
    su
dd if=/dev/block/by-name/efs of=/sdcard/efs_backup.bin
dd if=/dev/block/by-name/nvram of=/sdcard/nvram_backup.bin
  4. Copy the files to your PC. This backup is unique to your device and 100% legal.

is an Android 14-based firmware released around January 2024 for various regions, including Nigeria, Thailand, and Afghanistan.

Note: This text is for illustrative purposes. Always respect local laws regarding device repair and software modification.