Technical Hardware & Software Specifications
When you flash or upgrade to U13 (Android 9 or 10) firmware, the EFS or modem partitions can get corrupted, leading to an invalid or missing IMEI. In most cases, the baseband shows as “Unknown” or “No Service.”
This typically happens due to:
- Flashing an incompatible modem or CSC file
- Corrupted EFS partition
- IMEI overwritten during full firmware flash
- Downgrade attempt from higher U firmware
Requirements Before Repair
Before starting the IMEI repair process, make sure you have the following tools ready:- Z3X or Octoplus Box (latest version)
- Samsung USB Drivers installed
- N950F U13 Repair IMEI Fixed Firmware (download from MobiFirms.com)
- Stable internet connection for tool activation
Step-by-Step IMEI Repair Procedure
Step 1: Flash Fixed Firmware
- Download the N950F U13 Repair IMEI Fixed File and flash it using Odin.
- Boot phone into Download Mode (Vol Down + Bixby + Power)
- Load the fixed firmware in Odin (AP slot)
- Start flashing and wait for reboot
- Connect your phone in ADB or UART mode
- Open Z3X / Octoplus
- Select model N950F
- Click Repair IMEI (ADB)
- Enter original IMEI (check sticker under battery or box)
Step 3: Finalize and Reboot
Once the repair is successful, reboot the device.
Check your IMEI using: *#06# and confirm your network is working again.
Result:
Your Samsung N950F (U13) will now show the correct IMEI and register on your carrier network. The fix is 100% tested and safe for daily use.
Pro Tip:
If IMEI fails again after reboot, flash modem.bin separately or re-patch NV data using the same tool. Avoid factory resets after IMEI repair to keep it stable.
Conclusion:
By following this N950F U13 Repair IMEI Solution, you can restore full network function on your Note 8 without root or Knox issues.
For more tested repair guides and firmware files, visit MobiFirms.com — your trusted source for official firmware and Android repair solutions.
⚡ Standard Flashing Requirements & Instructions
Prerequisites
- ✓ Charge device battery to at least 50%
- ✓ Use original OEM USB cable
- ✓ Backup all personal data & contacts
- ✓ Install proper USB / VCOM / Fastboot Drivers
Important Notice
Flashing factory firmware will erase all user data. Ensure you have verified your device model number and build code match before starting.
| Select / Version | Region | Size | Date Added | Action |
|---|---|---|---|---|
|
✓
v1.0
Latest
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Global | 4.3GB | Feb 15, 2026 | Download |