While there is no "full text" or single command to change an IMEI through the standard Web Admin Interface (defaulting to 192.168.0.1 ), technical users typically explore the following avenues:

Search for the hex string of your original IMEI inside the file and replace it with the hex string of the new IMEI. Save the modified .qcn file.

After writing the updated data to the device partitions, the router must execute a clean reboot to reload the updated hardware parameters.

Essential for running specific Qualcomm driver suites and terminal tools.

chipset. Changing its IMEI is a technical process typically used to repair a corrupted identity or to use specific data plans that are restricted to certain device types. ⚠️ Legal & Safety Disclaimer:

If the router boots up but shows "No Service" or loses its MAC address, your modification process likely corrupted the RF calibration data. If this happens, restore your original backup file immediately to return the device to its factory state.

Connect the MC801A to a separate OpenWRT or GL.iNet router. That second router can mask traffic and rotate MAC addresses. The carrier only sees the MC801A’s IMEI, but traffic analysis fails.

Modifying your IMEI to spoof a different device type violates your cellular provider's contract. This can result in permanent account suspension or blacklisting.

You own the router outright (no contract), you own the donor device (its SIM is dead), and you are using it on a network that allows BYOD (Bring Your Own Device) but requires IMEI registration for technical reasons (rare).

stands for International Mobile Equipment Identity . It is a 15-digit unique serial number assigned to every cellular modem, smartphone, or tablet.

This is the most straightforward method if your IMEI is missing or "all zeros". Connect Device : Connect your ZTE MC801A to your PC via a USB cable. : Launch the ZTE Qualcomm Writer

The IMEI is a unique 15-digit identifier assigned to your router's hardware at the factory. It functions as a digital fingerprint that mobile carriers use to identify the device type and verify its eligibility on their network.

By default, the ZTE MC801A locks down its diagnostic ports. To perform any low-level partition modification, you must force the device into . Method A: WebUI API Commands (For Older Firmware)

: The IMEI is mapped to specific NV items (typically NV Item 550 for the primary IMEI). The data is not stored in plain text; it is encoded using a specific hexadecimal structure called Hex-BCD (Binary Coded Decimal) mapping.

1. Using specialized Tools (e.g., DC-Unlocker/Qualcomm Tools)

The IMEI is stored within the device's non-volatile memory, specifically inside the (Non-Volatile Random-Access Memory) or EFS (Encrypting File System) partitions of the Qualcomm modem chip. This data is protected by secure boot mechanisms to prevent unauthorized tampering. The Role of Qualcomm Diag Mode