You can try to do these steps as below:
1.Clear all firmware entries and NVUs:
AT!ENTERCND=“A710”
AT!IMAGE=0
AT!RESET
2. Download the latest firmware (SWI9X30C_02.33.03.00 Generic) to the module
https://source.sierrawireless.com/resources/airprime/minicard/74xx/airprime-em_mc74xx-approved-fw-packages/#sthash.u3x3NZkA.dpbs
3. Set image management preferences
AT!ENTERCND=“A710”
AT!IMPREF=“GENERIC”
AT!RESET
4.Provide some information about your module using below commands
ATI3
AT!ENTERCND=“A710”
AT!HWID?
AT!IMPREF?
AT!IMAGE?
AT!PRIID?
AT!GSTATUS?
AT!SKU?