GNU/Linux Mint Intel Wi-fi Firmware Setup Guide
Hi! The Tutorial shows you Step-by-step How to Install Intel Wifi Devices Firmware in Mint GNU/Linux Desktops.
Especially relevant: most Intel WiFi Devices Linux Mint Drivers should be part of the Linux Kernel. But in case to Upgrade it see: New Kernel Installation Guide.
In any case this Guide shows you How to Setup the Intel Wifi Firmware Manually.