Quectel Change Imei Install -

If you encounter unexpected errors during the programming sequence, check the following common failure points:

The module firmware may have locked security sectors. You need to upgrade or downgrade to an engineering firmware version that permits identity configuration. quectel change imei install

Connect the primary (and optionally, diversity/GNSS) antennas to the U.FL or SMA connectors on the module. Never power on a cellular module without an antenna connected , as this can permanently damage the internal power amplifier. If you encounter unexpected errors during the programming

This command writes the new IMEI to the specific memory location on the module. A successful write is usually confirmed by an OK response. After writing, the change can be verified by issuing the read command, AT+CGSN , which should return the new IMEI. Never power on a cellular module without an

Your operating system requires specific USB drivers to expose the module's diagnostic, AT, and modem ports. Windows Driver Installation

AT+CFUN=1,1