diff --git a/host/lib/pack_firmware.py b/host/lib/pack_firmware.py
index 0ec551c..8d0f124 100644
--- a/host/lib/pack_firmware.py
+++ b/host/lib/pack_firmware.py
@@ -796,7 +796,7 @@
     """
     for _ in range(0, 2):
       for entry in self.entries:
-        if isinstance(entry, EntryBlob):
+        if isinstance(entry, EntryBlob) and entry.required:
           self._out.Info("Updating blob positions in fdt for '%s'" % entry.key)
           data, directory = self.ConcatPropContents(
               entry.key.split(','), None, entry.with_index)