A Reddit user tried to flash a "T-Mobile firmware" onto a Bell Canada gateway. The device rebooted, displayed a red LED, and never recovered. The only fix was a $200 replacement fee.
: If you have a specific firmware file provided by your ISP, click Choose File , select it, and then click Upload . nokia fastmile 5g gateway 3.1 firmware download
Here is why, what you should do instead, and how to check if you are already up to date. A Reddit user tried to flash a "T-Mobile