MI Redmi 6/6A IMEI Repair NV Data Corrupted Solution With UMT

Repairing the IMEI of an MI Redmi 6/6A or solving the "NV Data Corrupted

Operation : IMEI Reapir [META (New)]
Checking for existing META ports...
No existing META port found.
Hold VOL UP + DOWN and connect USB Cable.
Some phone may have different key combination for BROM mode.
Waiting for device in BROM mode...
Port: COM4 [MediaTek USB Port (COM4)]
Device Path: \\?\usb#vid_0e8d&pid_0003#6&35a389a6&0&6#{86e0d1e0-8089-11d0-9ce4-08003e301f73}
Chipset: 0x0766, [MT6765] [Helio P35/G35]
Hardware Info: 0x8A00, 0xCA00, 0x00
Config : [SecureBoot: True] [SLA: True] [DA Auth: True]
MEID: A7EA547F52D2C7BA8F67B655DC8B1074
Preparing device...
-- Success!
Found MediaTek USB Port (COM4) on COM4
Device Path : usb\vid_0e8d&pid_0003&rev_0100
Mode : BROM
Rebooting to META mode...
Waiting for phone in META mode...
Found MediaTek USB VCOM (Android) (COM5) on COM5
Device Path : \\?\usb#vid_0e8d&pid_200e#4fc79a387d27#{a5dcbf10-6530-11d2-901f-00c04fb951ed}
Configuring Communication Channel...
Reading phone information...
CPU : MT6765
SW Ver. : MOLY.LR12A.R2.MP.V24.32.P71
HW Ver. : WINGTECH_O1MP6_K62V1_64_BSP_HW
IMEI1 : 151515151515151
IMEI2 : 151515151515151
Reading data from phone...
Repairing IMEI1 to 867---------598...
Repairing IMEI2 to 867--------1598...
Syncing Data...
Operation Finished.
[UltimateMTK Ver. 5.1]

Repairing the IMEI of an MI Redmi 6/6A and fixing the “NV Data Corrupted” issue using UMT (Ultimate Multi Tool) involves a series of steps that require proper tools and understanding. Here’s how you can proceed:

Disclaimer

IMEI repair or modification without authorization is illegal in many countries. Only perform these steps if you’re authorized or it’s legally permissible in your region.
Ensure you use the original IMEI of your device (found on the device box or under the battery).
Backup your data, as this process may erase everything.

Requirements

Tools & Software:
- UMT Dongle with QcFire Module
- Qualcomm USB Drivers installed on your PC
- USB cable
- NV Data Backup or stock firmware for your phone
Preparations:
- Enable USB Debugging:
  - Settings > About Phone > Tap MIUI Version 7 times.
  - Go to Developer Options > Enable USB Debugging.
- Charge your device to at least 50%.

Steps to Repair IMEI / Fix NV Data Corruption

Step 1: Enter EDL (Emergency Download Mode)

Turn off your device.
Use any of these methods to enter EDL mode:
- Press and hold Volume Down + Volume Up, then connect the USB cable to your PC.
- If the above doesn’t work, use test points (requires opening the phone).
- Alternatively, use UMT’s “Reboot to EDL” option in the QcFire tool (requires USB Debugging enabled).

Step 2: Open UMT QcFire Tool

Launch the QcFire Module on UMT.
Ensure the device is detected under “Qualcomm HS-USB QDLoader 9008” in Device Manager.

Step 3: Repair IMEI / NV Data

Repair NV Data:
- In the QcFire Tool, navigate to the “Backup/Restore” section.
- Choose “Restore NV” and load a working NV file.
- Click “Start” and let it complete.
Repair IMEI:
- Select the “Write IMEI” option in QcFire.
- Input the original IMEI numbers (from your phone’s box or sticker).
- Click “Start” to write the IMEI back to the device.

Step 4: Flash Stock Firmware (if needed)

If the NV Data corruption persists, download the stock firmware for your MI Redmi 6/6A and flash it using Mi Flash Tool:
- Load the firmware.
- Select “Clean All” in Mi Flash Tool.
- Flash the firmware and reboot the device.

Step 5: Reboot and Verify

Disconnect the device and power it on.
Dial *#06# to check if the IMEI is restored.
Test the phone for network connectivity.

Troubleshooting Tips

Device Not Detected in EDL Mode:
- Reinstall Qualcomm drivers or try a different USB port/cable.
Error in Writing IMEI:
- Ensure you’re using the correct IMEI format (15 digits) and that the tool recognizes your device.
NV Data Still Corrupted:
- Double-check the NV file compatibility or consider professional repair.

Important Notes

This method requires technical expertise. If you’re unsure, seek help from a qualified technician.
Modifying the IMEI for illegal purposes is a serious offense and can lead to legal action.

If done correctly, this process should resolve the NV Data Corruption issue and restore the original IMEI functionality.