How to Install Mediatek MT766u/MT7663 Driver on Gnu/Linux Distros
GNU/Linux Installing MediaTek MT766u/MT7663 Driver Guide
How to Install Ralink/MediaTek MT766u/MT7663 Wireless Driver in GNU/Linux Distributions.
And to make use of the Latest MediaTek MT76 Driver on Linux it’s enough to dispose of an Updated Linux Kernel.
After a Kernel Upgrade, it is Strongly Recommended to Immediately Proceed with a Firmware Update to Ensure Hardware Compatibility and Optimal Performance. Follow this Guide: How to Update Linux Firmware on GNU/Linux Distros.
Especially relevant: this Driver is supplied from Linux 4.19 but some important Connection Issues has been fixed only starting from the 5.4.1 Kernel release.
But on Debian-based it may be just missing the Proprietary Firmware!
