IMEI Restoration on Xiaomi Redmi 9: Official and Alternative Methods

Losing IMEI on Xiaomi Redmi 9 is a common problem after a failed firmware, factory reset or experimenting with modified recovery. Without the correct IMEI, the smartphone loses the ability to call, send SMS and use the mobile Internet, effectively turning into a tablet. 90% of the time the problem is solved software, but it is important to act carefully: wrong actions can lead to a complete failure of the communication module.

In this article, we will discuss all the current ways to restore IMEI to Redmi 9 (codenamed lancelot), including official methods through the Mi Flash Tool and alternative solutions using Engineering Mode and ADB. Each method is illustrated with screenshots and accompanied by warnings about possible risks. If you are not sure about your skills, you should contact the Xiaomi service center.

Why the Redmi 9 IMEI is Missing and How to Check It

IMEI (International Mobile Equipment Identity) is a unique identifier for your device that is stored in NVRAM (energy-independent memory). On Redmi 9, IMEI loss usually occurs for three reasons:

• 🔄 Incorrect firmware via Fastboot or Recovery, especially if you used firmware from another model (e.g. Redmi) 9A or Redmi 9C).
• ⚡ Reset to factory settings via Hard Reset on devices with damaged area NVRAM.
• 🛠️ Repair or replace motherboard without data transfer NVRAM.

To make sure that the IMEI is lost, follow the following steps:

1. Open the phone app and type *#06#.
2. If the 15-digit number is Null/Null or Invalid IMEI, the problem is confirmed.
3. Check for network availability: If there is no cellular indicator in the status bar (even without a signal level), this is an indirect sign.

Important: if IMEI The system is displayed, but the network does not catch, the problem may be in the communication module (antennae, radio chip) or the operator locks. IMEI It will not help – a diagnosis of iron is required.

Method 1: IMEI Recovery through Engineering Mode (MTK)

Xiaomi Redmi 9 is built on the platform MediaTek Helio G80, which allows you to use Engineering Mode for manual input IMEI. This method works if the NVRAM area is not damaged critically.

• 📱 Smartphone with a charge of at least 50%.
• 📝 Original. IMEI (You can find it on a box or under a battery).
• 🔧 Annex MTK Engineering Mode (you can download it here).

Step-by-step:

1. Install and open the MTK Engineering Mode.
2. Go to Connectivity → CDS Information → Radio Information.
3. Select Phone 1 (for the first SIM slot).
4. In the field AT+ command: AT +EGMR=1,7,"Yours_IMEI_1" (replace yours_IMEI_1 first IMEI box).
5. Press Send AT Command. If the command is successful, OK will appear.
6. Repeat steps 3-5 for Phone 2 using the second IMEI.
7. Reset the device.

⚠️ Note: If an error occurs after entering the command AT command error, which means that the area NVRAM Continuing to try can make the problem worse, go to Method 2.

After restart, check it out. IMEI *#06#. If numbers are displayed but the network does not appear, reset the network settings to Settings → SIM-maps and mobile networks → Resetting network settings.

Method 2: Recovery through ADB (for power users)

If the Engineering Mode didn't work, you can try to restore IMEI through ADB (Android Debug Bridge), which requires an unlocked bootloader and root rights, so it's only suitable for advanced users.

• 🚨 The ability to blink the device in case of error in commands.
• 🔒 Loss of warranty (if it is still valid).
• 🛡️ The need to disable Mi Account to unlock the bootloader.

Instructions:

1. Unlock the bootloader through the official Xiaomi tool (can take up to 72 hours).
2. Install TWRP Recovery for Redmi 9 (the version must match the Lancelot model code).
3. Download the archive with utilities for recovery NVRAM (for example, NVRAM_Restore_Tool.zip for MTK).
4. Connect your phone to your PC, open ADB and execute the commands: adb shell su dd if=/dev/zero of=/dev/nvram bs=1 count=1 reboot
5. After the reboot, repeat the steps from Method 1 to enter the IMEI.

If the IMEI has not recovered after these manipulations, the problem may be in hardware damage to the NVRAM chip. In this case, only replacing the motherboard or flashing through the Mi Flash Tool will help (see the next method).

Method 3: Official Recovery with Mi Flash Tool

The most reliable, but also the most radical way, is to flash the device with the official firmware through the Mi Flash Tool, which works even if the NVRAM is completely erased, because the firmware contains the original data for your model.

Step-by-step:

1. Unpack the firmware in a folder without Cyrillic characters (for example, C:\Redmi9_Firmware).
2. Install the Mi Flash Tool and Qualcomm drivers.
3. Turn off the phone. Press Volume down + Power to enter the Fastboot.
4. Connect your phone to your PC. In the Mi Flash Tool, press Refresh, the device needs to be determined.
5. Select the firmware folder, select Clean all mode and press Flash.
6. Wait for the end (10-15 minutes) and the phone will reboot automatically.

⚠️ Note: If the firmware is interrupted during the waiting for device phase, try to put the phone into mode EDL It's a test point (requires disassembly). No experience is recommended, you better contact the service.

Check the firmware after you've done it. IMEI. If the number is still missing, but the phone will determine SIM-Repeat Method 1 – Firmware could restore structure NVRAM, not the data.

Frequent mistakes and their solutions

When restoring IMEI, users often face typical problems, and here are the most common ways to fix them:

If none of the methods worked, the reason could be hardware damage. For example, on the Redmi 9 often fails the NVRAM chip (marked MT6359), which is responsible for storing the IMEI. In this case, soldering or replacement of the motherboard is required.

💡

Before you start recovering IMEI, back up your data via TWRP or Mi PC Suite, and after you have firmware, all data will be erased!

How to avoid losing your IMEI in the future

To avoid the problem again, follow these recommendations:

• 🔧 Use only official firmware from Xiaomi for the lancelot model. Avoid custom builds from questionable sources.
• 🔄 Before resetting to factory settings, check integrity NVRAM via Engineering Mode (section) NVRAM Test).
• 📦 Keep the originals. IMEI In a secure location (for example, on a cloud service or on paper).
• ⚡ Do not interrupt the firmware or update process – this can damage critical partitions.

If you experiment with firmware often, consider buying a backup NVRAM module (for example, through TWRP), which will allow you to quickly recover data even after serious crashes.

💡

The most reliable way to avoid problems with IMEI is to use official Xiaomi tools (Mi Flash Tool, Mi Unlock) and not resort to “gray” methods of unlocking the bootloader.

FAQ: Answers to Frequent Questions