Navigate to the official manufacturer or internet service provider (ISP) support portal that provisioned your WLTFSM-146GN. Locate the downloads section for your specific model and hardware revision. Download the latest firmware binary file (usually ending in .bin , .img , or .chk ) directly to your desktop. Do not attempt to open this file on your computer. Step 2: Access the Router Administrative Dashboard
If this is part of a Mikrotik LTE setup, the process might involve a USB power reset, such as going to System -> Routerboard -> USB Power Reset . To give you the most accurate steps, I'd need to know: wltfsm-146gn firmware update
Fixes known bugs that cause intermittent disconnects, random reboots, or dropped LTE bands. Navigate to the official manufacturer or internet service