diff --git a/scripts/update_payload/applier.py b/scripts/update_payload/applier.py
index fa419bd..cc77165 100644
--- a/scripts/update_payload/applier.py
+++ b/scripts/update_payload/applier.py
@@ -301,6 +301,27 @@
     _WriteExtents(part_file, in_data, op.dst_extents, block_size,
                   '%s.dst_extents' % op_name)
 
+  def _ApplyZeroOperation(self, op, op_name, part_file):
+    """Applies a ZERO operation.
+
+    Args:
+      op: the operation object
+      op_name: name string for error reporting
+      part_file: the partition file object
+
+    Raises:
+      PayloadError if something goes wrong.
+    """
+    block_size = self.block_size
+    base_name = '%s.dst_extents' % op_name
+
+    # Iterate over the extents and write zero.
+    for ex, ex_name in common.ExtentIter(op.dst_extents, base_name):
+      # Only do actual writing if this is not a pseudo-extent.
+      if ex.start_block != common.PSEUDO_EXTENT_MARKER:
+        part_file.seek(ex.start_block * block_size)
+        part_file.write('\0' * (ex.num_blocks * block_size))
+
   def _ApplyBsdiffOperation(self, op, op_name, patch_data, new_part_file):
     """Applies a BSDIFF operation.
 
@@ -463,6 +484,8 @@
         self._ApplyReplaceOperation(op, op_name, data, new_part_file, part_size)
       elif op.type == common.OpType.MOVE:
         self._ApplyMoveOperation(op, op_name, new_part_file)
+      elif op.type == common.OpType.ZERO:
+        self._ApplyZeroOperation(op, op_name, new_part_file)
       elif op.type == common.OpType.BSDIFF:
         self._ApplyBsdiffOperation(op, op_name, data, new_part_file)
       elif op.type == common.OpType.SOURCE_COPY:
diff --git a/scripts/update_payload/checker.py b/scripts/update_payload/checker.py
index 7404408..c613642 100644
--- a/scripts/update_payload/checker.py
+++ b/scripts/update_payload/checker.py
@@ -815,6 +815,24 @@
     if dst_extent:
       raise error.PayloadError('%s: excess dst blocks.' % op_name)
 
+  def _CheckZeroOperation(self, op, op_name):
+    """Specific checks for ZERO operations.
+
+    Args:
+      op: The operation object from the manifest.
+      op_name: Operation name for error reporting.
+
+    Raises:
+      error.PayloadError if any check fails.
+    """
+    # Check: Does not contain src extents, data_length and data_offset.
+    if op.src_extents:
+      raise error.PayloadError('%s: contains src_extents.' % op_name)
+    if op.data_length:
+      raise error.PayloadError('%s: contains data_length.' % op_name)
+    if op.data_offset:
+      raise error.PayloadError('%s: contains data_offset.' % op_name)
+
   def _CheckAnyDiffOperation(self, data_length, total_dst_blocks, op_name):
     """Specific checks for BSDIFF, SOURCE_BSDIFF and PUFFDIFF operations.
 
@@ -972,6 +990,8 @@
     elif op.type == common.OpType.MOVE and self.minor_version == 1:
       self._CheckMoveOperation(op, data_offset, total_src_blocks,
                                total_dst_blocks, op_name)
+    elif op.type == common.OpType.ZERO and self.minor_version >= 4:
+      self._CheckZeroOperation(op, op_name)
     elif op.type == common.OpType.BSDIFF and self.minor_version == 1:
       self._CheckAnyDiffOperation(data_length, total_dst_blocks, op_name)
     elif op.type == common.OpType.SOURCE_COPY and self.minor_version >= 2:
@@ -1039,6 +1059,7 @@
         common.OpType.REPLACE: 0,
         common.OpType.REPLACE_BZ: 0,
         common.OpType.MOVE: 0,
+        common.OpType.ZERO: 0,
         common.OpType.BSDIFF: 0,
         common.OpType.SOURCE_COPY: 0,
         common.OpType.SOURCE_BSDIFF: 0,
diff --git a/scripts/update_payload/checker_unittest.py b/scripts/update_payload/checker_unittest.py
index 2e1efeb..d79b00b 100755
--- a/scripts/update_payload/checker_unittest.py
+++ b/scripts/update_payload/checker_unittest.py
@@ -872,6 +872,8 @@
       payload_checker.minor_version = 2 if fail_bad_minor_version else 1
     elif op_type in (common.OpType.SOURCE_COPY, common.OpType.SOURCE_BSDIFF):
       payload_checker.minor_version = 1 if fail_bad_minor_version else 2
+    elif op_type in (common.OpType.ZERO, common.OpType.DISCARD):
+      payload_checker.minor_version = 3 if fail_bad_minor_version else 4
 
     if op_type not in (common.OpType.MOVE, common.OpType.SOURCE_COPY):
       if not fail_mismatched_data_offset_length: