diff --git a/installers/install_from_source.sh b/installers/install_from_source.sh
index 02d9e05..cf706a9 100755
--- a/installers/install_from_source.sh
+++ b/installers/install_from_source.sh
@@ -18,9 +18,10 @@
     echo -e "Install OSM from source code"
     echo -e "  OPTIONS"
     echo -e "     --uninstall:   uninstall OSM: remove the containers and delete NAT rules"
-    echo -e "     -b <branch>:   install OSM from source code using a specific branch (master, v1.0, ...)"
+    echo -e "     -b <branch>:   install OSM from source code using a specific branch (master, v1.0, ...) or tag"
     echo -e "                    -b master"
     echo -e "                    -b v1.0"
+    echo -e "                    -b tags/v1.1.0"
     echo -e "                    ..."
     echo -e "     --develop:     (deprecated, use '-b master') install OSM from source code using the master branch"
     echo -e "     --nat:         install only NAT rules"
@@ -225,6 +226,19 @@
     esac
 done
 
+if [ -n "$SHOWOPTS" ]; then
+    echo "DEVELOP=$DEVELOP"
+    echo "UNINSTALL=$UNINSTALL"
+    echo "NAT=$NAT"
+    echo "UPDATE=$UPDATE"
+    echo "RECONFIGURE=$RECONFIGURE"
+    echo "TEST_INSTALLER=$TEST_INSTALLER"
+    echo "LXD=$LXD"
+    echo "SHOWOPTS=$SHOWOPTS"
+    echo "Install from specific refspec (-b): $COMMIT_ID"
+    exit 0
+fi
+
 [ -z "$COMMIT_ID" ] && [ -n "$DEVELOP" ] && COMMIT_ID="master"
 [ -n "$TEST_INSTALLER" ] && [ -z "$COMMIT_ID" ]  && echo "Use -b option to specify the branch to use for the test (e.g.: v1.0)" && exit 0
 
@@ -248,20 +262,10 @@
 echo -e "\nGuessing the current stable release"
 LATEST_STABLE_DEVOPS=`git -C $TEMPDIR tag -l v[0-9].* | tail -n1`
 [ -z "$COMMIT_ID" ] && [ -z "$LATEST_STABLE_DEVOPS" ] && echo "Could not find the current latest stable release" && exit 0
-
-if [ -n "$SHOWOPTS" ]; then
-    echo "DEVELOP=$DEVELOP"
-    echo "UNINSTALL=$UNINSTALL"
-    echo "NAT=$NAT"
-    echo "UPDATE=$UPDATE"
-    echo "RECONFIGURE=$RECONFIGURE"
-    echo "TEST_INSTALLER=$TEST_INSTALLER"
-    echo "LXD=$LXD"
-    echo "SHOWOPTS=$SHOWOPTS"
-    echo "Latest tag in devops repo: $LATEST_STABLE_DEVOPS"
-    echo "Commit to be installed (-b): $COMMIT_ID"
-    exit 0
-fi
+echo "Latest tag in devops repo: $LATEST_STABLE_DEVOPS"
+[ -z "$COMMIT_ID" ] && [ -n "$LATEST_STABLE_DEVOPS" ] && COMMIT_ID="tags/$LATEST_STABLE_DEVOPS"
+[ -z "$TEST_INSTALLER" ] && git -C $TEMPDIR checkout $LATEST_STABLE_DEVOPS
+echo -e "\n Installing OSM from refspec: $COMMIT_ID"
 
 OSM_DEVOPS=$TEMPDIR
 OSM_JENKINS="$TEMPDIR/jenkins"
@@ -282,9 +286,6 @@
 echo -e "Checking required packages: lxd"
 lxd --version &>/dev/null || echo -e "lxd not present, exiting " >&2 && exit 1
 
-[ -z "$COMMIT_ID" ] && [ -n "$LATEST_STABLE_DEVOPS" ] && COMMIT_ID="tags/$LATEST_STABLE_DEVOPS"
-echo -e "\n Installing OSM from refspec: $COMMIT_ID"
-
 wget -q -O- https://osm-download.etsi.org/ftp/osm-1.0-one/README.txt &> /dev/null
 
 [ -n "$LXD" ] && echo -e "\nConfiguring lxd" && install_lxd