diff --git a/scripts/iiab-update b/scripts/iiab-update
index 8f8ba2f94..eca416d60 100755
--- a/scripts/iiab-update
+++ b/scripts/iiab-update
@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/bin/bash -e
+# "-e" tries to exit right away on error.
 
 # Upgrade IIAB core software (apt updates, Ansible, Admin Console, etc).
 
@@ -39,8 +40,8 @@
     git pull https://github.com/iiab/iiab --no-rebase --no-edit
     if [[ $1 == "-f" || $1 == "--fast" ]]; then    # Otherwise ./runrole does it below! (as Ansible runs roles/0-init)
         cd scripts
-        echo -e "\n\e[4mNow running: cp iiab-update iiab-summary iiab-diagnostics /usr/bin\e[0m\n"
-        cp iiab-update iiab-summary iiab-diagnostics /usr/bin
+        echo -e "\n\e[4mNow running: cp -u iiab-update iiab-summary iiab-diagnostics /usr/bin\e[0m\n"
+        cp -u iiab-update iiab-summary iiab-diagnostics /usr/bin
     fi
 
     if [[ $1 == "-f" || $1 == "--fast" ]]; then