diff --git a/G1BILLETS.sh b/G1BILLETS.sh
index eead4e1..e995f84 100755
--- a/G1BILLETS.sh
+++ b/G1BILLETS.sh
@@ -159,7 +159,7 @@ Content-Type: text/html; charset=UTF-8
     </style>
 </head>
 <body>
-    <center><h1><a href="javascript:history.go(-1)">(♥‿‿♥)</a>.</h1></center>
+    <center><h1><a href="'$RNAME'">(♥‿‿♥)</a>.</h1></center>
     <center><div id="countdown"></div></center>
     <script>
     var timeLeft = 30;
diff --git a/install.sh b/install.sh
index 7e2429f..b4e98f0 100755
--- a/install.sh
+++ b/install.sh
@@ -9,10 +9,18 @@ MY_PATH="`( cd \"$MY_PATH\" && pwd )`"  # absolutized and normalized
 ME="${0##*/}"
 
 echo "#############################################"
-echo ">>>>>>>>>>> SYSTEMD SETUP  "
+echo ">>>>>>>>>>> INSTALL CRYPTO AND IMAGING TOOLS  "
 echo "#############################################"
+sudo apt-get update
 
-sudo apt install python3 python3-pip imagemagick qrencode ttf-mscorefonts-installer netcat-traditional python3-gpg
+for i in gpg python3 python3-pip imagemagick qrencode ttf-mscorefonts-installer netcat-traditional python3-gpg; do
+    if [ $(dpkg-query -W -f='${Status}' $i 2>/dev/null | grep -c "ok installed") -eq 0 ]; then
+        echo ">>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Installation $i <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
+        sudo apt install -y $i
+        [[ $? != 0 ]] && echo "INSTALL $i FAILED." && echo "INSTALL $i FAILED." && continue
+
+    fi
+done
 
 for i in pip setuptools wheel cryptography==3.4.8 Ed25519 base58 google duniterpy pynacl pgpy pynentry SecureBytes amzqr; do
         echo ">>> Installation $i <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
