: Your device's unique identification for cellular networks. Baseband Information : Controls the modem and radio functions. Calibration Data : Settings for Wi-Fi, Bluetooth, and GPS sensors. Product Code & Serial Number : Regional and manufacturing identifiers. When do you need this file? You typically search for an NV data file (or an EFS backup
, technicians often require both a valid NV backup and a matching CERT file Technical Repair Operations
What does your device currently display when you dial ?
The is a critical system file for the Samsung Galaxy S6 (International model) that stores non-volatile random-access memory ( NVRAM ) information. This data contains unique device hardware information, including your IMEI number , serial numbers, and radio frequency (RF) calibration parameters. Why You Need This File sm-g920f nv data file
The primary symptoms of a corrupted or missing NV data file are unmistakable. The most common is a "null" or generic IMEI (often showing as 350000000000006 ), an "Unknown" baseband version in the phone's settings, and the inability to register on a cellular network, preventing calls, texts, and mobile data.
This file contains critical, device-specific information, including:
Also, in , a corrupted EFS often triggers: : Your device's unique identification for cellular networks
If your G920F is still working normally, . Here’s how:
SM-G920F owners often find themselves searching for NV data files because theirs has become corrupted or erased. This can happen for several reasons. A common scenario involves flashing custom ROMs or using Samsung's Odin tool to flash firmware. If the "Repartition" or "EFS Clear" options are checked incorrectly, it can wipe the NV data partition. Another frequent cause is downgrading the Android version (e.g., from Android 7.0 Nougat to Android 6.0.1 Marshmallow), which can render the modem partition incompatible, leading to an "Unknown" baseband and null IMEI. Physical damage, such as water exposure, can also corrupt this critical partition.
This article dives deep into what this file is, why it is critical for your phone's functionality, how to fix common errors associated with it, and where to find legitimate tools and backups. Whether you are a professional repair technician or a DIY enthusiast, understanding the NV (Non-Volatile) memory structure of the Exynos 7420 chipset is the key to resurrecting a bricked G920F. Product Code & Serial Number : Regional and
If you have , you face a much harder path:
Radio frequency (RF) calibration parameters required to connect to 2G, 3G, and 4G LTE networks.