I updated the firmware on this modem and on both windows and linux. The modem will never connect and when I do a at!gstatus? I get low power mode. When I do a IMPREF it says that my carrier name and config are mismatched. I have tried to reset this modem back to factory and that did begin the radio back on.
Not knowing the history of the issue, the quickest way to address the problem is to flash an appropriate firmware with carrier image so that the module will have the matching FW/PRI which will get it out of the LPM.
Please refer to the Source below for the bundled FW/PRI you may need.