Is this an IMEI-changing tool?

No. It only restores the factory IMEIs that already belong to your device. Writing other IMEIs is illegal.

Will it work on all Xiaomi models?

Currently tested on Redmi 14C, POCO C75, Redmi A3 Pro (lake/pond). Other MTK models may need different tools.

How do I find my device’s codename?

You can check reliable sources such as Technastic, PhoneDB, or the postmarketOS Wiki to confirm your device codename.

XiaomiOfficialPatchNv – Fix NV Error & Restore IMEI (CPID Method)

XiaomiOfficialPatchNv Tool Free Download – Fix NV Data Corruption, Restore IMEI & MAC (CPID Method)

If you have a Xiaomi, Redmi, or POCO smartphone and suddenly see the error “NV data is corrupted”, your IMEI/Baseband is showing as Unknown, or Wi-Fi/Bluetooth MAC addresses are missing — don’t panic. The XiaomiOfficialPatchNv Tool is designed exactly for this situation.

This free Windows utility (MikoForce build) allows authorized technicians to restore the phone’s original identity data inside NVRAM/NVData, using the CHIPID/CPID binding method. It does not generate or modify random IMEIs — instead, it restores the factory values that belong to the same motherboard.

XiaomiOfficialPatchNv – Fix NV Error & Restore IMEI (CPID Method)

What is XiaomiOfficialPatchNv?

XiaomiOfficialPatchNv is a professional service tool used in mobile repair shops. When the radio partitions (NVData/NVRAM) are damaged during flashing, board replacement, or bad firmware operations, the phone loses its original identifiers.

The tool helps repair this by:

Reading the device’s CHIPID/CPID.
Allowing entry of the phone’s original identifiers (IMEI1/IMEI2, MEID, Wi-Fi MAC, Bluetooth MAC).
Patching those values back into NVRAM, strictly tied to the same hardware ID.
Re-enabling IMEI/Baseband, Wi-Fi, and Bluetooth functionality after reboot.

Who Should Use It?

Mobile repair professionals handling Xiaomi/Redmi/POCO models with MTK processors.
Authorized technicians with access to the phone’s genuine identifiers (box sticker, warranty card, or service database).
Users facing NV partition corruption after flashing or motherboard repairs.

Important Note: Rewriting IMEIs that do not belong to your device is illegal in many countries. This guide only covers restoring the factory identifiers that originally came with the phone.

Problems Fixed by XiaomiOfficialPatchNv

“NV data is corrupted” errors at boot.
Unknown IMEI/Baseband shown in Settings or via *#06#.
Missing or invalid Wi-Fi and Bluetooth MAC addresses.
Radio services not working after board replacement or heavy flashing.

Tested Devices & Codenames

The tool has been tested on the following board families:

Codename	Device Models	Notes
lake	Redmi 14C, POCO C75, Redmi A3 Pro family	Common budget series with MTK chipsets.
pond	Redmi A3 Pro 4G Standard Edition	Shares board with “lake” family.

Tip: If you are not sure about your device codename, check the official codename lists on Technastic
or postmarketOS Wiki.

How the CPID/CHIPID Method Works

The tool detects the device’s unique CHIPID (CPID) when connected.
A Critical Data Panel shows PRODUCT codename (e.g., pond), CHIPID, and blank fields for identifiers.
You input the original identifiers from the box sticker/service docs.
Patch NVRAM writes those identifiers, securely bound to the same CHIPID.
The phone reboots, restoring IMEI, Baseband, Wi-Fi, and Bluetooth.

This ensures the values are tied to the same motherboard, preventing cross-writing from other devices.

Prerequisites

Before using the tool, make sure you have:

Correct stock firmware for your codename and region (fastboot package recommended).
The phone’s original identifiers (from box sticker, warranty card, or service portal).
A Windows PC with Xiaomi/MTK drivers installed.
A reliable USB cable.
(Optional) Backup of current NVRAM/NVData partitions.

Step-by-Step Workflow (High Level)

Confirm your device codename (lake/pond).
Download the matching official firmware for reference files.
Connect the phone in service/flash mode (as required by your environment).
Launch XiaomiOfficialPatchNv and verify CHIPID.
In the Critical Data panel, enter the original IMEI, MEID, Wi-Fi, and BT MAC addresses.
Click Patch NVRAM.
Reboot and check:

*#06# → IMEI
Settings → About → Baseband
Wi-Fi and Bluetooth toggles working

Troubleshooting

Baseband Unknown even after IMEI restore → Flash the correct modem file from stock firmware.
Wi-Fi/BT toggle not working → Enter the correct MAC addresses and reboot twice.
Replaced motherboard → Only enter identifiers legally assigned to the new board.