diff --git a/Einrichter-CLI.sh b/Einrichter-CLI.sh
index dd0ecb1..bc50e5d 100644
--- a/Einrichter-CLI.sh
+++ b/Einrichter-CLI.sh
@@ -4,24 +4,54 @@ then echo "Please run Einrichter (TylkoLinux) using administrative permissions."
 exit
 fi
 
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+EINRICHTER_VER=0.1.0
+
 function main() {
 
 }
 
 function einrichter.installer.pkgs() {
-    echo "[1/ ] Downloading package list..."
+    echo "M: Preparing TylkoLinux for installation..."
+    mkdir $LFS/sources
+    echo "[1/6] Downloading package list..."
     wget https://www.linuxfromscratch.org/lfs/view/stable-systemd/wget-list-systemd --continue --directory-prefix=$LFS/sources    
-    echo "[2/ ] Downloading checksum of packages"
+    echo "[2/6] Downloading checksum of packages"
     wget https://www.linuxfromscratch.org/lfs/view/stable-systemd/md5sums --continue --directory-prefix=$LFS/sources
-    echo "[3/ ] Installing packages
+    echo "[3/6] Download packages..."
     wget --input-file=wget-list-systemd --continue --directory-prefix=$LFS/sources
+    echo "[4/6] Verifying packages..."
     pushd $LFS/sources
-        md5sum -c md5sums
+        function einrichter.installer.pkgs.verify() {
+            md5sum -c $LFS/sources/md5sums || FAILURE_CODE=ec12737
+        }
+        einrichter.installer.pkgs.verify || einrichter.installer.fail
+    popd
+    echo "[5/6] Downloading patches..."
+    mkdir $LFS/sources/patches
+    wget --input-file=lfs-patch-list --continue --directory-prefix=$LFS/sources/patches
+    echo "[6/6] Verifying patches..."
+    pushd $LFS/sources/patches
+        function einrichter.installer.pkgs.verify.patches() {
+            md5sum -c $SCRIPT_DIR/lfs-patch-list-checksum || FAILURE_CODE=ec12737
+        }
+        einrichter.installer.pkgs.verify.patches || einrichter.installer.fail
     popd
 }
 
 function einrichter.installer.bg() {
     
 }
+
+function einrichter.installer.fail() {
+    case "$FAILURE_CODE" in
+        "ec12737")
+            echo "E: The verification of the packages has failed. This could be an issue on either your side of the Installer's. Please report this error to the github.com/kevadesu/TylkoLinux repository."
+            ;;
+        *)
+            echo "E: The installation failed due to an unknown error."
+            ;;
+    esac
+}
 main