No. This is ADSL firmware, not LTE. It has no SIM slot. For ISP unlock, this firmware is locked to Etisalal PPPoE server domains. You cannot change it without hacking the XML config (not recommended).
Rami smiled, typed back one line:
To understand why the firmware landscape for this device is the way it is, one must understand the underlying silicon. zte zxhn h108n firmware etisalat top