Are you using a (like Tether) or the web interface ?
Ensure you source the firmware file ( .bin , .img , or .tar format) directly from your specific device manufacturer’s official support portal or your internet service provider (ISP). Using a file meant for a different hardware revision can permanently damage the module.
Navigate to the or System tab to find the Firmware Update section.
Check the sticker on the bottom or back of your router to find the specific model number.
This is the easiest and most common way to apply the update.