Changing the IMEI (International Mobile Equipment Identity) is a common but complex procedure for this router.
Connect the router via USB/LAN and use a specific command or script to enable the Qualcomm diagnostic port. Open QXDM: In the "NVBrowser" section, navigate to ID 1992 .
Changing or "repairing" the IMEI (International Mobile Equipment Identity) on a ZTE MC801A
Users edit the QCN file using a Hex Editor, search for the original IMEI (encoded in hex), replace it with the new one, and then restore the modified QCN to the router.
This is an informational outline only. I do not condone violating ToS or laws. Proceed at your own risk.
Changing the IMEI on a ZTE MC801A (which uses the Qualcomm SDX55 chipset) is a complex process often discussed in enthusiast forums for bypassing carrier-specific network limitations.