Searching for and using a pre-made "NV data file" for the Samsung Galaxy S6 (SM-G920F) is generally considered a high-risk operation. While it is a powerful tool for repairing specific software issues, downloading a random file from the internet and flashing it to your device usually leads to a hard bricked phone or a lost IMEI.
| Action | Why | |--------|------| | Always back up EFS before flashing anything | First rule of Samsung repair. | | Never flash a full CP/modem from a different model | G920F = Shannon 333. G920FD = different RF layout. | | Avoid downgrading below Android 7.0 | Samsung introduced anti-rollback for EFS structures. | | Use only Odin 3.13+ with Auto Reboot OFF | Prevents interrupted writes to EFS during flash. |
This method writes the NV file directly to the modem partition.
Step 1: Flash TWRP Recovery
Step 2: Boot to TWRP and Enable ADB
Step 3: Identify the NV Partition Open a command prompt on your PC and run: sm-g920f nv data file
adb shell
ls -la /dev/block/by-name | grep nv
You should see something like nv -> /dev/block/sda9 (or similar). Note this path.
Step 4: Write the NV Data File
Assuming your donor NV file is named nv_data.bin and located in your ADB folder:
adb push nv_data.bin /sdcard/
adb shell
dd if=/sdcard/nv_data.bin of=/dev/block/sda9
Critical: Replace sda9 with your actual NV partition path.
Step 5: Wipe Cache and Reboot
adb shell
dd if=/dev/zero of=/dev/block/sda10 (this wipes the NV backup partition)
reboot
After reboot, your IMEI will likely be that of the donor phone. You must now change it to your original. Searching for and using a pre-made "NV data
When you Google the keyword "sm-g920f nv data file," you are typically looking for one of two things:
Critical Warning: There is no "universal" NV Data file. If you download a random NV file from a forum and write it directly to your phone, you will end up with someone else’s IMEI. In most countries (USA, UK, EU, India, etc.), using a mismatched or cloned IMEI is a criminal offense. The goal is to repair your own NV data, not clone another device.
| 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+ |
Process with box:
The SM-G920F’s NV data file is barely 5–10 MB in size—a rounding error on a 32 GB phone. Yet its integrity determines whether the device lives as a fully functional communication tool or dies as a miniature tablet. | Action | Why | |--------|------| | Always
For the average user, this feature serves as a warning: back up your EFS today. For the technician, it’s a reminder that the most powerful tools (Odin, TWRP, root) come with the responsibility to safeguard the phone’s digital identity.
And for the G920F itself—now nearly a decade old—the NV data file remains its final, fragile link to the cellular world.
Have you recovered a G920F with a dead IMEI? Share your experience in the comments or our repair forum.
If your SM-G920F is still working normally, create a backup now. This will save you hours of frustration later.
If your G920F is still working normally, stop reading and back up your NV data immediately. Here’s how: