diff --git a/components/app_update/otatool.py b/components/app_update/otatool.py
index 7a087be16d..ca22001015 100755
--- a/components/app_update/otatool.py
+++ b/components/app_update/otatool.py
@@ -63,8 +63,6 @@ class OtatoolTarget():
             self.target.read_partition(OtatoolTarget.OTADATA_PARTITION, temp_file.name)
             with open(temp_file.name, "rb") as f:
                 self.otadata = f.read()
-        except Exception:
-            self.otadata = None
         finally:
             os.unlink(temp_file.name)