4gdong001 Firmware

: Insert your Micro SIM with the cores facing down. Power Up : Plug it into a laptop or power bank.

: Supports 3G and 4G networks; common frequency bands include B1, B3, and B5 . 4gdong001 Firmware

is a versatile 4G LTE USB modem and Wi-Fi hotspot commonly used with XTRONS Android head units : Insert your Micro SIM with the cores facing down

If the dongle is completely bricked (no USB enumeration, no LED): common frequency bands include B1