Sm-g920f Nv Data File

Title: [Solution] SM-G920F NV Data / NVDATA Corrupted – Repair Guide & File Links Post Content: Hello colleagues,

• Step 1: Diagnosis. He confirmed the IMEI was still visible in the phone’s hidden service menu (#0011#). It was there, but unregistered. A name without a body.
• Step 2: Injection. He wrote a virgin NV Data skeleton from a donor phone onto Lena’s device. The phone twitched. The baseband version appeared.
• Step 3: The Surgery. He manually injected the original IMEI, Bluetooth MAC address, and Wi-Fi calibration values from the old backup. Each value was a four-digit hex code—like tuning a lost piano to exactly the right pitch.
• Step 4: The Repair. He reprovisioned the RF (radio frequency) tables. Without these, the phone would see a tower but refuse to shake its hand.

1. Read phone info.
2. Backup current NV.
3. Write original IMEI (requires root or special mode).
4. Repair NV structure → rebuild certificates.

Typical contents (examples)

• IMEI and product codes
• NV items for baseband/calibration (RF calibration data)
• Wi‑Fi and Bluetooth MAC addresses
• NVRAM keys and device certificates
• Carrier provisioning and network profiles

: It is a standard safety procedure to read and save a security backup ( sm-g920f nv data file

Corrupted IMEI: The device may show a generic IMEI (often starting with 35000000000009), preventing it from making calls or using mobile data. Title: [Solution] SM-G920F NV Data / NVDATA Corrupted

Practical steps (concise)

1. Make a backup: boot TWRP → Mount /efs → Use Backup to save efs, or adb shell dd if=/dev/block/XYZ of=/sdcard/efs.img.
2. Verify checksum: sha256sum efs.img.
3. Restore: boot TWRP → Restore efs, or adb push efs.img and dd back to partition (ensure correct block device).
4. Reboot and check IMEI: dial *#06# or Settings → About phone.

Using custom tool: EFS Professional (Windows)

• Needs root & USB debugging.
• Can rebuild basic NV items (not original IMEI).