Updating the modem’s internal software can improve its ability to hand over between 4G and 3G towers and may unlock support for additional frequency bands used by different carriers.
A warning not to unplug the USB dongle during the write process to avoid "bricking" the device. Ldw931 Firmware Update
: Some updates allow the device to connect to a wider range of LTE bands ( ), making it more compatible with different carriers. Updating the modem’s internal software can improve its
– Full model number, voltage, manufacturer name, or FCC ID would help. or FCC ID would help.