- Download the next netinst.iso https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/bullseye_di_alpha2/amd64/iso-cd/ or newer.
I'm using the bullseye because it has the latest kernel, and it seems required for this laptop. Also, the link might breake because the alpha2 it's no longer available because Debian Bullseye has already a beta version or it's released as stable distribution. In that case, check the root directory https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/
- Burn the ISO in a USB Stick.
- Download the iwlwifi drivers https://packages.debian.org/bullseye/all/firmware-iwlwifi
I needed to download those packages because the current image (in step 1) doesn't contain all the required firmware, that package contains the remining ones. It might not be the case when bullseye becomes stable. Today, 2020/05/06, it's still required.
- Unpack the file in another USB Stick.
- Start the installation of Debian Bullseye with Wifi support from scratch.
Enjoy ^_^
