Hello @vronp,
You can upgrade your device to the current General Release of Firmware 8.0.2
Alternative you can also look into using the latest beta release of firmware 8.1.0 Beta 2
We also recommend checking that you have the newest cellular chipset firmware, to update this, you need to go into “support.cgi” (search forum on how), and select the tool “Update Cellular Firmware”.
Happy to Help,
Marcus 