diff --git a/contrib/packager.io/functions.sh b/contrib/packager.io/functions.sh
index 9149754a66f9..7ee1ad518bb5 100755
--- a/contrib/packager.io/functions.sh
+++ b/contrib/packager.io/functions.sh
@@ -117,22 +117,22 @@ function detect_envs() {
     pip install --require-hashes -r ${APP_HOME}/contrib/dev_reqs/requirements.txt -q
 
     # Load config
-    local CONF=$(cat ${INVENTREE_CONFIG_FILE} | jc --yaml)
+    export INVENTREE_CONF_DATA=$(cat ${INVENTREE_CONFIG_FILE} | jc --yaml)
 
     # Parse the config file
-    export INVENTREE_MEDIA_ROOT=$(jq -r '.[].media_root' <<< ${CONF})
-    export INVENTREE_STATIC_ROOT=$(jq -r '.[].static_root' <<< ${CONF})
-    export INVENTREE_BACKUP_DIR=$(jq -r '.[].backup_dir' <<< ${CONF})
-    export INVENTREE_PLUGINS_ENABLED=$(jq -r '.[].plugins_enabled' <<< ${CONF})
-    export INVENTREE_PLUGIN_FILE=$(jq -r '.[].plugin_file' <<< ${CONF})
-    export INVENTREE_SECRET_KEY_FILE=$(jq -r '.[].secret_key_file' <<< ${CONF})
-
-    export INVENTREE_DB_ENGINE=$(jq -r '.[].database.ENGINE' <<< ${CONF})
-    export INVENTREE_DB_NAME=$(jq -r '.[].database.NAME' <<< ${CONF})
-    export INVENTREE_DB_USER=$(jq -r '.[].database.USER' <<< ${CONF})
-    export INVENTREE_DB_PASSWORD=$(jq -r '.[].database.PASSWORD' <<< ${CONF})
-    export INVENTREE_DB_HOST=$(jq -r '.[].database.HOST' <<< ${CONF})
-    export INVENTREE_DB_PORT=$(jq -r '.[].database.PORT' <<< ${CONF})
+    export INVENTREE_MEDIA_ROOT=$(jq -r '.[].media_root' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_STATIC_ROOT=$(jq -r '.[].static_root' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_BACKUP_DIR=$(jq -r '.[].backup_dir' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_PLUGINS_ENABLED=$(jq -r '.[].plugins_enabled' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_PLUGIN_FILE=$(jq -r '.[].plugin_file' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_SECRET_KEY_FILE=$(jq -r '.[].secret_key_file' <<< ${INVENTREE_CONF_DATA})
+
+    export INVENTREE_DB_ENGINE=$(jq -r '.[].database.ENGINE' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_DB_NAME=$(jq -r '.[].database.NAME' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_DB_USER=$(jq -r '.[].database.USER' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_DB_PASSWORD=$(jq -r '.[].database.PASSWORD' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_DB_HOST=$(jq -r '.[].database.HOST' <<< ${INVENTREE_CONF_DATA})
+    export INVENTREE_DB_PORT=$(jq -r '.[].database.PORT' <<< ${INVENTREE_CONF_DATA})
   else
     echo "# No config file found: ${INVENTREE_CONFIG_FILE}, using envs or defaults"
 
@@ -340,3 +340,44 @@ function final_message() {
   echo -e "   Password: ${INVENTREE_ADMIN_PASSWORD}"
   echo -e "####################################################################################"
 }
+
+
+function update_checks() {
+  echo "# Running upgrade"
+  local old_version=$1
+  local old_version_rev=$(echo ${old_version} | cut -d'-' -f1 | cut -d'.' -f2)
+  echo "# Old version is: ${old_version} - release: ${old_version_rev}"
+
+  local ABORT=false
+  function check_config_value() {
+    local env_key=$1
+    local config_key=$2
+    local name=$3
+
+    local value=$(inventree config:get ${env_key})
+    if [ -z "${value}" ] || [ "$value" == "null" ]; then
+      value=$(jq -r ".[].${config_key}" <<< ${INVENTREE_CONF_DATA})
+    fi
+    if [ -z "${value}" ] || [ "$value" == "null" ]; then
+      echo "# No setting for ${name} found - please set it manually either in ${INVENTREE_CONFIG_FILE} under '${config_key}' or with 'inventree config:set ${env_key}=value'"
+      ABORT=true
+    else
+      echo "# Found setting for ${name} - ${value}"
+    fi
+  }
+
+  # Custom checks if old version is below 0.8.0
+  if [ "${old_version_rev}" -lt "9" ]; then
+    echo "# Old version is below 0.9.0 - You might be missing some configs"
+
+    # Check for BACKUP_DIR and SITE_URL in INVENTREE_CONF_DATA and config
+    check_config_value "INVENTREE_SITE_URL" "site_url" "site URL"
+    check_config_value "INVENTREE_BACKUP_DIR" "backup_dir" "backup dir"
+
+    if [ "${ABORT}" = true ]; then
+      echo "# Aborting - please set the missing values and run the update again"
+      exit 1
+    fi
+    echo "# All checks passed - continuing with the update"
+  fi
+}
diff --git a/contrib/packager.io/postinstall.sh b/contrib/packager.io/postinstall.sh
index 89c88833b100..297f332ec7a9 100755
--- a/contrib/packager.io/postinstall.sh
+++ b/contrib/packager.io/postinstall.sh
@@ -35,6 +35,14 @@ detect_initcmd
 detect_ip
 detect_python
 
+# Check if we are updating and need to alert
+echo "# Checking if update checks are needed"
+if [ -z "$2" ]; then
+  echo "# Normal install - no need for checks"
+else
+  update_checks $2
+fi
+
 # create processes
 create_initscripts
 create_admin