Most UFi (Universal Fast Internet) dongles sold online today fall into two technical categories based on their internal chipsets. Knowing yours is critical for finding the correct "flash file":
Enable users to select and lock specific LTE bands (e.g., Band 3, 5, 40) via the Ufi Web UI (typically at 192.168.100.1) to avoid auto-switching to slower, congested bands. 4g Ufi Dongle Firmware -FREE-
In the world of repair tools, if the firmware is free, you are the product. Most UFi (Universal Fast Internet) dongles sold online