diff --git a/README.md b/README.md
index 9a575fd..c1596eb 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,15 @@ Explication : The loop option of mount (it's not a type, it's an option) tells m
 - Then we dismantle everything in ```/mnt```
 - Finally we delete the iso present in the /mnt directory
 
+- GET non-free-firmwares for DEBIAN:
+```bash
+# cd to the directory where you have your initrd
+cd /tftpboot/debian-installer/amd64
+cp -p initrd.gz initrd.gz.orig
+wget https://cdimage.debian.org/cdimage/firmware/stable/current/firmware.cpio.gz
+cat initrd.gz.orig firmware.cpio.gz > initrd.gz
+```
+
 ## TO DO
 
 - [ ] distribs versions in .env
diff --git a/trixie_preseed.cfg b/trixie_preseed.cfg
index f8bce70..287c55f 100644
--- a/trixie_preseed.cfg
+++ b/trixie_preseed.cfg
@@ -148,6 +148,13 @@ d-i partman/confirm_nooverwrite boolean true
 # (default: false).
 d-i apt-setup/cdrom/set-first boolean false
 # You can choose to install non-free firmware.
+# Enable non-free firmware automatically
+d-i apt-setup/non-free-firmware boolean true
+d-i apt-setup/non-free boolean true
+d-i apt-setup/contrib boolean true
+
+# Allow firmware loading without prompting
+d-i hw-detect/load_firmware boolean true
 
 ### Package selection
 #tasksel tasksel/first multiselect standard, web-server, kde-desktop
@@ -188,35 +195,6 @@ d-i grub-installer/with_other_os boolean true
 # To install to the primary device (assuming it is not a USB stick):
 d-i grub-installer/bootdev  string default
 
-### Finishing up the installation
-d-i preseed/late_command string \
-    # Crée le dossier et clone le dépôt
-    in-target mkdir -p /home/visiteur/postinstall; \
-    in-target git clone https://git.legaragenumerique.fr/GARAGENUM/trixie-gn-postinstall.git /home/visiteur/postinstall; \
-    in-target chmod +x /home/visiteur/postinstall/post_install_trixie.sh; \
-    \
-    # Crée le service systemd pour exécuter le script sur tty1 au premier boot
-    in-target bash -c 'echo "[Unit]" > /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "Description=Post-install configuration script" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "After=systemd-user-sessions.service" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "Before=getty@tty1.service" >> /etc/systemd/system/postinstall.service'; \
-    \
-    in-target bash -c 'echo "[Service]" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "Type=simple" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "ExecStart=/bin/bash -c \"chvt 1; exec /bin/bash /home/visiteur/postinstall/post_install_trixie.sh\"" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "StandardInput=tty" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "StandardOutput=inherit" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "TTYPath=/dev/tty1" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "TTYReset=yes" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "TTYVHangup=yes" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "TTYVTDisallocate=yes" >> /etc/systemd/system/postinstall.service'; \
-    \
-    in-target bash -c 'echo "[Install]" >> /etc/systemd/system/postinstall.service'; \
-    in-target bash -c 'echo "WantedBy=multi-user.target" >> /etc/systemd/system/postinstall.service'; \
-    \
-    # Active le service pour qu’il s’exécute au redémarrage
-    in-target systemctl enable postinstall.service
-
 #d-i debian-installer/exit/halt boolean true
 # This will power off the machine instead of just halting it.
 d-i debian-installer/exit/poweroff boolean true