Once the phone boots:
If you still see "null", repeat the process but use the "Rebuild EFS" option in UMT before writing IMEI.
| Issue | Solution |
|-------|----------|
| UMT not detecting phone | Reinstall Samsung drivers, try different USB port, disable driver signature enforcement (Windows). |
| “Device not in Diag mode” | On J410F, dial *#0808# → select RMNET + DM + MODEM → reboot. |
| Repair fails at “Writing certificates” | Ensure phone is in MTP mode with screen unlocked. Try using combination firmware. |
| IMEI reverts after reboot | Flash full stock firmware (4 files) using Odin, then repeat repair. |
This report details the technical process and considerations regarding the repair of the International Mobile Equipment Identity (IMEI) for the Samsung Galaxy J4+ (model SM-J410F) using the Ultimate Multi Tool (UMT) box. The SM-J410F is a mid-range Samsung device released in 2018. Due to its Qualcomm Snapdragon chipset (MSM8917), it falls under the "Qualcomm" module in UMT, allowing for operations via EDL (Emergency Download) Mode.
Disclaimer: Repairing or altering IMEI numbers is regulated by law in many jurisdictions. This report is for technical educational purposes only. Tampering with IMEI is illegal in many countries if done to facilitate theft or fraud. Users must ensure they are restoring the device's original IMEI.
Repairing the IMEI on a Samsung Galaxy J4 Core (SM-J410F) Ultimate Multi Tool (UMT) typically involves using the UMT Samsung Tool UMT Avengers Box Prerequisites Root Access : The device must be rooted to write a new IMEI. ADB Enabled Settings > About Phone Build Number seven times, and enable USB Debugging Developer Options USB Drivers
: Ensure the latest Samsung USB drivers are installed on your PC. Step-by-Step Repair Process Open UMT Samsung Tool j410f imei repair umt
: Launch the latest version of the UMT Samsung module or Avengers Box Samsung Tool. Connect Device
: Connect the J410F to the PC via USB. Ensure the phone is on and ADB is authorized. : In the tool, click to confirm the device is properly connected and recognized. Repair Tab : Navigate to the Enter IMEI Locate the IMEI fields.
Input the original IMEI numbers found on the device's sticker or original box. Execute Repair : Click the Write IMEI
button. The tool will process the command, which often involves patching the modem. Patch Certificate
: After the IMEI is written, the device may show "Emergency Calls Only." You must click Patch Certificate Patch Network ) to restore network signal. : The phone will automatically restart. Once on, dial to verify the IMEI. Alternative Tools
If UMT is not available, other professional service tools support this model: Magma Tool Once the phone boots:
: Known for "one-click" permanent repairs on J410F across all binary versions. Chimera Tool
: Widely used for MediaTek and Samsung repairs, including IMEI patching. Unlock Tool : A popular choice for MTK-based Samsung repairs. Legal Disclaimer
: Modifying or repairing an IMEI is illegal in many jurisdictions unless it is the original number assigned to the device. Ensure you are compliant with local laws before proceeding. specific rooting method for the J410F binary version you are currently using? AI responses may include mistakes. Learn more
Disclaimer:
IMEI repair laws vary by country. In many regions, changing the original IMEI is illegal unless you are replacing a damaged motherboard or have written authorization from the carrier. This guide is for educational purposes and for repairing a “Null IMEI” issue caused by firmware corruption after a failed flash. Proceed at your own risk.
Verdict: Highly Effective (with the right hardware).
For technicians and advanced users, the UMT Pro Toolkit (UMTPro), specifically the Samsung Module, is currently one of the most reliable software solutions for IMEI repair on the Samsung SM-J410F. However, it is not a "one-click" solution for beginners; it requires specific hardware drivers, credits, and a solid understanding of the device’s partition structure. If you still see "null", repeat the process
Before any write operation, always back up the current (corrupted) EFS:
This backup can restore the phone if something goes wrong.
Pros:
Cons:
The process generally involves three main stages: Pre-processing, Server Operation, and Writing the IMEI.
