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You can check reliable codename lists on Technastic, postmarketOS Wiki, or XHyperOS websites.

Xiaomi Official Patch Nvram Tool – Fix NV v2 Error & IMEI Restore (CPID Method)

Q: Is this an IMEI-changing tool?

No. Xiaomi Official Patch Nvram Tool is designed to restore the phone's factory identifiers after NV corruption. Writing foreign IMEIs is illegal in most regions.

Q: Does it work on every Xiaomi device?

The tool has been tested on lake (Redmi 14C/POCO C75) and pond (Redmi A3 Pro 4G). Other MTK models may require different tools or steps.

Xiaomi Official Patch Nvram – NV v2 Error and IMEI Restore (CPID Method) – Free Android Tool (MikoForce)

Overview

Xiaomi Official Patch Nvram Tool is a small Windows utility developed for authorized Xiaomi/Redmi/POCO repair. It is designed to fix critical issues when a device shows:

“NV data is corrupted”
IMEI/Baseband is Unknown
Wi-Fi or Bluetooth MAC address is missing

This free Android repair tool works by restoring the phone’s original identity records inside NVRAM/NVData. Instead of changing values, it restores the original ones using the device’s CHIPID/CPID binding method.

In its main panel, the tool shows Critical Data fields like:

Product name (e.g., pond)
CHIPID/CPID
IMEI1 / IMEI2
MEID
Wi-Fi MAC
Bluetooth MAC

From there, the Patch NVRAM option writes the identifiers back to NV partitions and binds them to the same motherboard.

Xiaomi Official Patch Nvram – NV v2 Error and IMEI Restore (CPID Method) – Free Android Tool (MikoForce)

What Problems Does It Fix?

“NV data is corrupted” at boot or recovery
IMEI/Baseband Unknown
Missing Wi-Fi/Bluetooth MAC addresses

These issues often occur after:

Flashing wrong firmware
Accidental NV partition wipe
Board replacements or repairs

Supported Xiaomi/Redmi/POCO Devices

Codename	Supported Devices
lake	Redmi 14C / POCO C75 / Redmi A3 Pro family
pond	Redmi A3 Pro 4G Standard Edition (Xiaomi Lake/Pond board family)

Tip: If you don’t know your codename, check reliable codename indexes on Technastic
or XHyperOS

Who Can Use This Tool?

This tool is only for professional technicians or authorized users:

MTK-based Xiaomi devices with corrupted NV or radio partitions.
Users with legal proof of device identifiers (box sticker, warranty card, service database).

Warning: Writing random or foreign IMEIs is illegal in many regions. Always restore factory-assigned identifiers only. If unsure, use an official Xiaomi service center.

How CPID/CHIPID Restore Works

The tool reads CHIPID/CPID from the device when connected.
The Critical Data panel lets you validate product codename (e.g., pond), IMEI, MEID, and MAC addresses.
Patch NVRAM writes identifiers back into NV partitions, bound to the device’s unique CHIPID.
After reboot, radio services reinitialize, restoring IMEI, Baseband, Wi-Fi, and Bluetooth.

This method reduces the risk of cross-writing wrong identities after motherboard swaps or heavy flashing.

Requirements

Before using the tool, make sure you have:

Correct stock firmware for your codename/region (fastboot package recommended).
Original identifiers from device labels or service database.
A Windows PC with proper drivers installed + stable USB cable.
Optional: NVRAM/NVData backup, even if corrupted.

Repair Workflow (High-Level)

Verify codename (lake/pond) and download official firmware.
Boot device into recognized service mode.
Open Xiaomi Official Patch Nvram Tool and confirm CHIPID.
Enter original IMEI/MEID/Wi-Fi/BT MAC values from device sticker/docs.
Click Patch NVRAM → device reboots.
Test with:

Dial *#06# for IMEI
Settings → About → Status → Baseband
Wi-Fi & Bluetooth toggles

External References

Troubleshooting

IMEI restored but Baseband Unknown → Flash correct modem/radio files.
Wi-Fi/Bluetooth not working → Check valid MAC addresses and reboot twice.
Board replaced → Only restore identifiers that legally belong to the new board.

Quick Summary – Xiaomi Official Patch Nvram Tool (CPID Method)

Xiaomi Official Patch Nvram Tool helps fix “NV data corrupted”, Unknown IMEI/Baseband, and missing MAC addresses on MTK-based Xiaomi/Redmi/POCO devices. It restores the original identifiers bound to the phone’s CHIPID/CPID. Tested on Redmi 14C, POCO C75, Redmi A3 Pro (lake/pond boards). Always use factory values only.