diff --git a/libraries/Update/src/Updater.cpp b/libraries/Update/src/Updater.cpp
index f5f6992db5a..4be13b9d1ed 100644
--- a/libraries/Update/src/Updater.cpp
+++ b/libraries/Update/src/Updater.cpp
@@ -524,9 +524,11 @@ size_t UpdateClass::writeStream(Stream &data) {
     return 0;
   }
 
-  if (!_verifyHeader(data.peek())) {
-    _reset();
-    return 0;
+  if (_command == U_FLASH && !_cryptMode) {
+    if (!_verifyHeader(data.peek())) {
+      _reset();
+      return 0;
+    }
   }
 
   if (_ledPin != -1) {