diff --git a/Makefile b/Makefile
index 14587a9..5aaf02c 100644
--- a/Makefile
+++ b/Makefile
@@ -47,8 +47,9 @@ clean_env: #Clear all caches and archives
 	sudo TargetArch=i386 lb clean --all
 	make -f Makefile.extra clean
 	rm -f config/hooks/normal/0899-install-dkms-drivers.chroot
+	rm -f config/package-lists/extrautils.list.chroot
 	#Remove customization
-	rm -f config/bootloaders/grub-pc/splash.png config/bootloaders/isolinux/splash.png config/includes.chroot/etc/NetworkManager/system-connections/Template.nmconnection
+	rm -f config/bootloaders/grub-pc/splash.png config/bootloaders/isolinux/splash.png config/includes.chroot/etc/NetworkManager/system-connections/Template.nmconnection config/hooks/normal/0091-Customization-remove-teminalAppMenu.hook.chroot
 	rm -rf config/includes.chroot/opt/custom
 
 clean_iso: #Removes genereated iso's
diff --git a/README.md b/README.md
index 14e4abc..f748380 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,21 @@
 Custom debian iso
 
 
+## Customization documetaton
+The 'Customization' folder is meant for branding, wifi settings and other small config changes,  
+a 'Customization' is added by putting it in the folder.  
+It is enabled with `make prep_buildenv Customization=<CustomizationName>`, if `Customization` option is not provided `Default` will be used  
+The `Default` can be used as an example/base for other customization packages
+
+
+## Basic build steps
+* Clone this repo
+* Install required packages for building by running `make install_buildenv`
+* If needed clone the customization to the `customization` folder
+* Setup the enviroment by using `make prep_buildenv` or `make prep_buildenv Customization=<CustomizationName>`
+* To enable `ExtraUtils` or `DKMS` update add `enable_<Feature>` the build command
+* To build all achetectures  run `make build` or `make enable_<Feature> build`, for one add `_amd64` or `_i386`
+
 ## Original creator / Source
 nodiscc  
 [Original project on Gitlab](https://gitlab.com/nodiscc/debian-live-config)
diff --git a/config/hooks/normal/0091-UpdateNetworkManagerPerms.chroot b/config/hooks/normal/0091-UpdateNetworkManagerPerms.chroot
index b38548e..612bd61 100644
--- a/config/hooks/normal/0091-UpdateNetworkManagerPerms.chroot
+++ b/config/hooks/normal/0091-UpdateNetworkManagerPerms.chroot
@@ -1,3 +1,6 @@
 #!/bin/bash
-#Set perrmissons for saved networks in NetworkManager
-chmod 600 /etc/NetworkManager/system-connections/*.nmconnection
\ No newline at end of file
+#Set perrmissons for saved networks in NetworkManager, if configs exist
+
+if ls /etc/NetworkManager/system-connections/*.nmconnection 1> /dev/null 2>&1 ; then
+    chmod 600 /etc/NetworkManager/system-connections/*.nmconnection
+fi
\ No newline at end of file