Forcing an older Android version onto a device with a newer security patch level, which can mismatch the EFS/NV partition structure.
Do not download a random "NV data file" from the internet. If your phone is malfunctioning, the data on that file belongs to someone else's phone, not yours. Seek a professional repair service that can restore your original IMEI rather than borrowing someone else's.
to flash the latest official stock firmware for the SM-G920F to ensure the system binaries are correct. Restore EFS/NV via Box/Dongle: Using a tool like Chimera Tool
Installing custom operating systems that accidentally overwrite the modem partitions.
| Tool | Can restore original IMEI? | Price range | |-------|----------------------------|--------------| | Octoplus/Octopus Box | Yes (with cert) | $100–200 | | Z3X Samsung Tool | Yes | $150–250 | | Chimera Tool | Yes (credits) | Subscription | | Hydra Tool | Yes | $200+ | | UFI Box | Partial | $300+ | sm-g920f nv data file
: Software like Z3X , Octopus Box , or Chimera are frequently used to write new NV data or repair the IMEI after corruption. Critical Warning
This article serves as a comprehensive guide to understanding, obtaining, and flashing a to restore your Samsung Galaxy S6 to working order in 2026. What is the SM-G920F NV Data File?
In the context of the Samsung Galaxy S6 (SM-G920F) NV (Non-Volatile) data file
SM-G920F NV data file (Non-Volatile data) is a critical system file for the Samsung Galaxy S6. It contains unique device information required for network connectivity and hardware identification. What is NV Data? Forcing an older Android version onto a device
can sometimes restore a missing baseband by re-writing the modem (CP) file. Octoplus Solution
When the NV data is corrupted (or a "Security damaged (1)" error appears), the following steps are generally taken by technicians to restore it: Flash Stock Firmware: First, use
Do you have access to professional repair tools like ? Do you have a previously saved EFS backup ?
Click execute and wait for the process to complete. The log should show a successful write to the NV items. Step 5: Reflash Stock Firmware and Patch Certificate Seek a professional repair service that can restore
Understanding the SM-G920F NV Data File: A Guide to Restoring Lost Signal and Repairing Baseband
A software-authenticated service suite that supports direct NV read/write capabilities for the Galaxy S6 family. Step-by-Step Guide to Restoring SM-G920F NV Data
If the prompt returns a blank screen, a generic 0000000000000 , or a null/null error, your IMEI is corrupted.