* Download AC27xx Unlocker @ http://www.mediafire.com/download/08q7a15sq8j0bv9
* Launch Zte AC2647 unlocker
* Select com
* Click on write
* Put spc 000000 then ok. u got message (write min limit sucess).
* If you get an error msg (write min limit failed) then reconnect modem and try again.