diff --git a/VERSION b/VERSION
index c350bf1..955cc3f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-VERSION=1.1
+VERSION=1.2
diff --git a/src/usbinstall.sh b/src/usbinstall.sh
index ea7f40e..005048a 100644
--- a/src/usbinstall.sh
+++ b/src/usbinstall.sh
@@ -333,7 +333,7 @@ else
    set_status $"Extracting bootloader data from ISO image..."
    echo $"Extracting bootloader data from ISO image..."
    ISOMOUNTDIR=`mktemp -d --suffix=.usbinstall`
-   mount -o loop $SELECT_ISO $ISOMOUNTDIR || {
+   mount -o loop,ro $SELECT_ISO $ISOMOUNTDIR || {
       errorAndExit $"Error: unable to mount ISO image"
    }