: Go to Advanced > System > Device Information to see your current version.

: This usually involves using a "Multicast Upgrade Tool" to force-flash a .bin or .hfs file, but it is not recommended for general users. Essential Device Details 4G Router Network Unlock - Huawei

Distributing unlock firmware that bypasses carrier licensing agreements (though enforcement is rare for end-users).

If no prompt appears, navigate to > Advanced Settings > SIM Settings > Unlock Device .

Before tampering with firmware, it is critical to understand the hardware.

Always backup your original firmware before flashing. Never interrupt the power during firmware upgrade (even a 1-second brownout can brick the device).