Couple of issues I have two 4G EU cards neither match your guide on firmware theses units on the chip are LE910C4-EU, I have tried the firmware from the modem update with no joy, I am running on the lastest firmware, but the sim card just plain out wont content to the network, and Modem keeps rebooting, Sim card have worked previously fine and have confirmed they work in a mobile, and have double/triple checked the APN settings.
In the status info I have
But I cannot get the unit to respond have also tried a different unit aswell