It seems that the external driver is secured or the folder is set to be read only. You can unsecure the driver or check the security permisson on the router's usb settings.

Hi Redriddic, any update? Perhaps you can reset the router by pressing the reset button. Maybe some settings are not right for the main network.

Does a computer work with your network using those static IP? If it does, connect the computer to the C60 by an Ethernet cable， login to 192.168.0.1, go to Advance-Network-Internet, change the...

Yes, port forwarding can work under 4G connection, but the WAN IP address obtained from sim card provider should be a public one, otherwise port forwarding will fail to be configured,

Did you see 3G/4G backup option under Advance-Network-Internet page? Enable it then go to 3G/4G to configure the settings. Note: You can only see this option when the router is on wireless router...

;)Glad to hear it is working. Cheers!