Some newer firmware versions (especially those sold to specific carriers) have the IMEI field "hard-fused." In these cases, standard AT commands will not work.
Connect your module and open your terminal software. Select the (usually at 115200 baud). Check the current IMEI by typing: AT+GSN Use code with caution. quectel change imei install
: If you get an error, it may be because the modem's interface is "up" and connected to a network. Try disconnecting any WAN or Ethernet connections before running the command. Persistence Some newer firmware versions (especially those sold to