am c1ee0e0a: fix update script.

* commit 'c1ee0e0a5296e8105b96e0cb6c621217ab8fb0b9':
  fix update script.
diff --git a/update_current.sh b/update_current.sh
index 80ae2ba..f7421ef 100755
--- a/update_current.sh
+++ b/update_current.sh
@@ -43,6 +43,7 @@
   then
     banner "support library"
     rm -rf $ROOT_DIR/current/support/
+    cd $ROOT_DIR/current
     unzip $SUPPORT >/dev/null
 
     # Remove duplicates