The WWAN wireless community is looking for the final fixes for the Sierra Wireless AirLink GX440. Their have been more problems with the launch of this device than we would expect from Sierra Wireless, but it looks like there is a light at the end of the tunnel. Today, I would like to address what the issue may be if your Sierra Wireless GX440 is hanging or constantly rebooting which prevents it from connecting to the network.
We have seen reboot conditions in GX440 before and would like to enumerate solutions depending on the root cause:
- A radio module going bad – this requires RMA to Sierra Wireless to replace the module.
- A radio module going into diagnostics mode – this is cleared by factory reset.
- Both issues above were corrected in the latest ALEOS + Radio Module firmware. Please confirm that your device has the latest version installed in their modems (4.3.3b.015 with MC7750/09 firmware), as this firmware should fix reboots due to 1 and 2
- A bad WiFi x-card can also cause the GX440 to reboot – Are you using the WiFi X-card? (http://usatcorp.com/article/wifi-kit-for-gx400-and-gx440-released ). A fix would require RMA of the unit.