diff --git a/tools/cc2538-bsl b/tools/cc2538-bsl
index 6185d8b16..434054237 160000
--- a/tools/cc2538-bsl
+++ b/tools/cc2538-bsl
@@ -1 +1 @@
-Subproject commit 6185d8b16f10047053fd57000a552340273d7d85
+Subproject commit 4340542370d3e319d692f9f969c5683231fce438