diff --git a/lib/auto_updater_transfer.py b/lib/auto_updater_transfer.py
index a5555a7..4a01592 100644
--- a/lib/auto_updater_transfer.py
+++ b/lib/auto_updater_transfer.py
@@ -48,7 +48,6 @@
 
 from chromite.lib import cros_build_lib
 from chromite.lib import cros_logging as logging
-from chromite.lib import metrics
 from chromite.lib import nebraska_wrapper
 from chromite.lib import osutils
 from chromite.lib import retry_util
@@ -336,8 +335,6 @@
           complete list of accepted keyword arguments.
     """
     self._staging_server = staging_server
-    self._fallback_metrics = metrics.Counter(
-        'chromeos/autotest/devserver/remote_devserver_call')
     super(LabTransfer, self).__init__(*args, **kwargs)
 
   @property
@@ -361,22 +358,6 @@
     """
     return r'.*/(R[0-9]+-)(?P<image_version>.+)'
 
-  def _UpdateFallbackMetrics(self, ssh_used, success, hostname=None):
-    """Updates metrics that track the fallback devserver calls.
-
-    Args:
-      ssh_used: Indicates whether the devserver was ssh-ed into first.
-      success: Whether the command completed successfully or not.
-      hostname: Hostname of the devserver on which payloads are staged. If None,
-         then the hostname is derived from the self._staging_server URL.
-    """
-    if not hostname:
-      hostname = urllib.parse.urlparse(self._staging_server).hostname
-
-    self._fallback_metrics.increment(fields={'dev_server': hostname,
-                                             'ssh_used': ssh_used,
-                                             'success': success})
-
   def _RemoteDevserverCall(self, cmd, stdout=False):
     """Runs a command on a remote devserver by sshing into it.
 
@@ -388,16 +369,7 @@
       stdout: True if the stdout of the command should be captured.
     """
     ip = urllib.parse.urlparse(self._staging_server).hostname
-    try:
-      success = True
-      return cros_build_lib.run(['ssh', ip] + cmd, log_output=True,
-                                stdout=stdout)
-    except cros_build_lib.RunCommandError:
-      success = False
-      logging.error('Remote devserver call failed.')
-      raise
-    finally:
-      self._UpdateFallbackMetrics(ssh_used=True, success=success, hostname=ip)
+    return cros_build_lib.run(['ssh', ip] + cmd, log_output=True, stdout=stdout)
 
   def _CheckPayloads(self, payload_name):
     """Runs the curl command that checks if payloads have been staged."""
@@ -407,27 +379,9 @@
     try:
       self._RemoteDevserverCall(cmd)
     except cros_build_lib.RunCommandError as e:
-      logging.error('Could not verify if %s was staged at %s. Received '
-                    'exception: %s', payload_name, payload_url, e)
-      # TODO(crbug.com/1059008): The following code block is a fallback. It
-      # should be removed once _RemoteDevserverCall has been proven to be
-      # reliable.
-      try:
-        success = True
-        # TODO(crbug.com/1033187): Remove log_output parameter passed to
-        # retry_util.RunCurl after the bug is fixed. The log_output=True option
-        # has been added to correct what seems to be a timing issue in
-        # retry_util.RunCurl. The error ((23) Failed writing body) is usually
-        # observed when a piped program closes the read pipe before the curl
-        # command has finished writing. log_output forces the read pipe to stay
-        # open, thus avoiding the failure.
-        retry_util.RunCurl(curl_args=cmd[1:], log_output=True)
-      except retry_util.DownloadError as e:
-        success = False
-        raise ChromiumOSTransferError('Payload %s does not exist at %s: %s' %
-                                      (payload_name, payload_url, e))
-      finally:
-        self._UpdateFallbackMetrics(ssh_used=False, success=success)
+      raise ChromiumOSTransferError(
+          'Could not verify if %s was staged at %s. Received exception: %s' %
+          (payload_name, payload_url, e))
 
   def CheckPayloads(self):
     """Verify that all required payloads are staged on staging server."""
@@ -553,7 +507,6 @@
     if self._local_payload_props_path is None:
       payload_props_filename = GetPayloadPropertiesFileName(self._payload_name)
       payload_props_path = os.path.join(self._tempdir, payload_props_filename)
-      fallback = True
 
       # Get command to retrieve contents of the properties file.
       cmd = ['curl',
@@ -561,44 +514,16 @@
       try:
         result = self._RemoteDevserverCall(cmd, stdout=True)
         json.loads(result.output)
-      except cros_build_lib.RunCommandError as e:
-        logging.error('Unable to get payload properties file by running %s due '
-                      'to exception: %s.', ' '.join(cmd), e)
-      except ValueError:
-        logging.error('Could not create %s as %s not valid json.',
-                      payload_props_path, result.output)
-      else:
-        fallback = False
         osutils.WriteFile(payload_props_path, result.output, 'wb',
                           makedirs=True)
-
-      if fallback:
-        # TODO(crbug.com/1059008): Fallback in case the try block above fails.
-        # Should be removed once reliable.
-
-        # Get command to download the properties file.
-        cmd = self._GetCurlCmdForPayloadDownload(
-            payload_dir=self._tempdir, build_id=self._payload_dir,
-            payload_filename=payload_props_filename)
-
-        # _GetCurlCmdForPayloadDownload removes the 'payloads/' prefix from the
-        # beginning of the payload_props_filename before creating the
-        # command. So here we need to remove that too.
-        prefix = 'payloads/'
-        if payload_props_filename.startswith(prefix):
-          payload_props_path = os.path.join(
-              self._tempdir,
-              payload_props_filename[len(prefix):])
-
-        try:
-          success = True
-          retry_util.RunCurl(cmd[1:])
-        except retry_util.DownloadError as e:
-          success = False
-          raise ChromiumOSTransferError('Unable to download %s: %s' %
-                                        (payload_props_filename, e))
-        finally:
-          self._UpdateFallbackMetrics(ssh_used=False, success=success)
+      except cros_build_lib.RunCommandError as e:
+        raise ChromiumOSTransferError(
+            'Unable to get payload properties file by running %s due to '
+            'exception: %s.' % (' '.join(cmd), e))
+      except ValueError:
+        raise ChromiumOSTransferError(
+            'Could not create %s as %s not valid json.' %
+            (payload_props_path, result.output))
 
       self._local_payload_props_path = payload_props_path
     return self._local_payload_props_path
@@ -615,18 +540,9 @@
     try:
       proc = self._RemoteDevserverCall(cmd, stdout=True)
     except cros_build_lib.RunCommandError as e:
-      logging.error('Unable to get payload size by running command %s due '
-                    'to exception: %s.', ' '.join(cmd), e)
-      # TODO(crbug.com/1059008): Fallback in case the try block above fails.
-      # Should be removed once reliable.
-      try:
-        success = True
-        proc = retry_util.RunCurl(cmd[1:], stdout=True)
-      except cros_build_lib.RunCommandError as e:
-        success = False
-        raise ChromiumOSTransferError('Unable to get payload size: %s' % e)
-      finally:
-        self._UpdateFallbackMetrics(ssh_used=False, success=success)
+      raise ChromiumOSTransferError(
+          'Unable to get payload size by running command %s due to exception: '
+          '%s.' % (' '.join(cmd), e))
 
     pattern = re.compile(r'Content-Length: [0-9]+', re.I)
     match = pattern.findall(proc.output)
diff --git a/lib/auto_updater_transfer_unittest.py b/lib/auto_updater_transfer_unittest.py
index aeb027e..ac919a1 100644
--- a/lib/auto_updater_transfer_unittest.py
+++ b/lib/auto_updater_transfer_unittest.py
@@ -26,7 +26,6 @@
 from chromite.lib import osutils
 from chromite.lib import partial_mock
 from chromite.lib import remote_access
-from chromite.lib import retry_util
 
 
 _DEFAULT_ARGS = {
@@ -622,8 +621,8 @@
   def testCheckPayloadsAllInRemoteDevserverCallError(self):
     """Test auto_updater_transfer.CheckPayloads.
 
-    Test CheckPayloads() method's fallback when transfer_rootfs_update and
-    transfer_stateful_update are both set to True and
+    Test the exception thrown by CheckPayloads() method when
+    transfer_rootfs_update and transfer_stateful_update are both set to True and
     LabTransfer._RemoteDevserver() throws an error.
     """
     with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
@@ -636,22 +635,9 @@
       self.PatchObject(auto_updater_transfer.LabTransfer,
                        '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl')
 
-      expected = [
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_update.gz', '--fail'],
-           'log_output': True},
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_update.gz.json', '--fail'],
-           'log_output': True},
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_stateful.tgz', '--fail'],
-           'log_output': True}]
-
-      CrOS_LabTransfer.CheckPayloads()
-      self.assertListEqual(retry_util.RunCurl.call_args_list,
-                           [mock.call(**x) for x in expected])
+      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
+                        CrOS_LabTransfer.CheckPayloads)
 
   def testCheckPayloadsNoStatefulTransfer(self):
     """Test auto_updater_transfer.CheckPayloads.
@@ -680,9 +666,9 @@
   def testCheckPayloadsNoStatefulTransferRemoteDevserverCallError(self):
     """Test auto_updater_transfer.CheckPayloads.
 
-    Test CheckPayloads() method's fallback when transfer_rootfs_update is True
-    and transfer_stateful_update is set to False and
-    LabTransfer._RemoteDevserver() throws an error.
+    Test the exception thrown by CheckPayloads() method when
+    transfer_rootfs_update is True and transfer_stateful_update is False
+    and LabTransfer._RemoteDevserver() throws an error.
     """
     with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
       CrOS_LabTransfer = CreateLabTransferInstance(
@@ -692,19 +678,9 @@
       self.PatchObject(auto_updater_transfer.LabTransfer,
                        '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl')
 
-      expected = [
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_update.gz', '--fail'],
-           'log_output': True},
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_update.gz.json', '--fail'],
-           'log_output': True}]
-
-      CrOS_LabTransfer.CheckPayloads()
-      self.assertListEqual(retry_util.RunCurl.call_args_list,
-                           [mock.call(**x) for x in expected])
+      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
+                        CrOS_LabTransfer.CheckPayloads)
 
   def testCheckPayloadsNoRootfsTransfer(self):
     """Test auto_updater_transfer.CheckPayloads.
@@ -730,9 +706,9 @@
   def testCheckPayloadsNoRootfsTransferRemoteDevserverCallError(self):
     """Test auto_updater_transfer.CheckPayloads.
 
-    Test CheckPayloads() method's fallback when transfer_rootfs_update is False
-    and transfer_stateful_update is set to True and
-    LabTransfer._RemoteDevserver() throws an error.
+    Test exception thrown by CheckPayloads() method when
+    transfer_rootfs_update is False and transfer_stateful_update is set to True
+    and LabTransfer._RemoteDevserver() throws an error.
     """
     with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
       CrOS_LabTransfer = CreateLabTransferInstance(
@@ -743,16 +719,9 @@
       self.PatchObject(auto_updater_transfer.LabTransfer,
                        '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl')
 
-      expected = [
-          {'curl_args': ['-I', 'http://0.0.0.0:8000/static/board-release/'
-                               '12345.6.7/test_stateful.tgz', '--fail'],
-           'log_output': True}]
-
-      CrOS_LabTransfer.CheckPayloads()
-      self.assertListEqual(retry_util.RunCurl.call_args_list,
-                           [mock.call(**x) for x in expected])
+      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
+                        CrOS_LabTransfer.CheckPayloads)
 
   def testCheckPayloadsNoPayloadError(self):
     """Test auto_updater_transfer.CheckPayloads.
@@ -766,8 +735,6 @@
       self.PatchObject(auto_updater_transfer.LabTransfer,
                        '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       side_effect=retry_util.DownloadError())
 
       self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
                         CrOS_LabTransfer.CheckPayloads)
@@ -825,12 +792,10 @@
   def testGetPayloadPropsFileWrongFormat(self):
     """Test LabTransfer.GetPayloadPropsFile().
 
-    Test when the payload is not in the correct json format. Also, test if the
-    fallback is being called.
+    Test exception thrown when the payload is not in the correct json format.
     """
     with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
       lab_xfer = auto_updater_transfer.LabTransfer
-      payload_props_path = os.path.join(self.tempdir, 'test_update.gz.json')
       output = 'Not in Json format'
 
       CrOS_LabTransfer = CreateLabTransferInstance(
@@ -838,36 +803,9 @@
 
       self.PatchObject(lab_xfer, '_RemoteDevserverCall',
                        return_value=cros_build_lib.CommandResult(stdout=output))
-      self.PatchObject(retry_util, 'RunCurl',
-                       return_value=cros_build_lib.CommandResult(stdout=''))
-      CrOS_LabTransfer.GetPayloadPropsFile()
 
-      self.assertEqual(CrOS_LabTransfer._local_payload_props_path,
-                       payload_props_path)
-
-  def testGetPayloadPropsFileRemoteDevserverCallError(self):
-    """Test LabTransfer.GetPayloadPropsFile().
-
-    Test when the LabTransfer._RemoteDevserverCall() method throws an error.
-    """
-    with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
-
-      lab_xfer = auto_updater_transfer.LabTransfer
-      payload_props_path = os.path.join(self.tempdir, 'test_update.gz.json')
-      output = ''
-
-      CrOS_LabTransfer = CreateLabTransferInstance(
-          device, tempdir=self.tempdir, payload_name='test_update.gz')
-
-      self.PatchObject(lab_xfer, '_RemoteDevserverCall',
-                       side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       return_value=cros_build_lib.CommandResult(stdout=output))
-
-      CrOS_LabTransfer.GetPayloadPropsFile()
-
-      self.assertEqual(CrOS_LabTransfer._local_payload_props_path,
-                       payload_props_path)
+      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
+                        CrOS_LabTransfer.GetPayloadPropsFile)
 
   def testGetPayloadPropsFileError(self):
     """Test LabTransfer.GetPayloadPropsFile().
@@ -881,8 +819,6 @@
           payload_dir='/test/dir')
       self.PatchObject(lab_xfer, '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       side_effect=retry_util.DownloadError())
       self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
                         CrOS_LabTransfer.GetPayloadPropsFile)
       self.assertIsNone(CrOS_LabTransfer._local_payload_props_path)
@@ -911,14 +847,10 @@
       CrOS_LabTransfer = CreateLabTransferInstance(
           device, payload_name='test_update.gz',
           payload_dir='/test/payload/dir')
-      expected_size = 75810234
-      output = 'Content-Length: %s' % str(expected_size)
       self.PatchObject(lab_xfer, '_RemoteDevserverCall',
                        side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       return_value=cros_build_lib.CommandResult(stdout=output))
-      size = CrOS_LabTransfer._GetPayloadSize()
-      self.assertEqual(size, expected_size)
+      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
+                        CrOS_LabTransfer._GetPayloadSize)
 
   def test_GetPayloadSizeNoRegexMatchError(self):
     """Test errors thrown by auto_updater_transfer._GetPayloadSize().
@@ -937,43 +869,6 @@
       self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
                         CrOS_LabTransfer._GetPayloadSize)
 
-  def test_GetPayloadSizeNoRegexMatchRemoteDevserverCallError(self):
-    """Test errors thrown by auto_updater_transfer._GetPayloadSize().
-
-    Test error thrown when the output received from the curl command does not
-    contain expected fields and LabTransfer._RemoteDevserverCall method throws
-    an error.
-    """
-    with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
-      lab_xfer = auto_updater_transfer.LabTransfer
-      CrOS_LabTransfer = CreateLabTransferInstance(
-          device, payload_name='test_update.gz',
-          payload_dir='/test/payload/dir')
-      output = 'No Match Output'
-      self.PatchObject(lab_xfer, '_RemoteDevserverCall',
-                       side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       return_value=cros_build_lib.CommandResult(stdout=output))
-      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
-                        CrOS_LabTransfer._GetPayloadSize)
-
-  def test_GetPayloadSizeCurlRunCommandError(self):
-    """Test errors thrown by auto_updater_transfer.GetPayloadSize().
-
-    Test error thrown when cros_build_lib.run raises a RunCommandError.
-    """
-    with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device:
-      lab_xfer = auto_updater_transfer.LabTransfer
-      CrOS_LabTransfer = CreateLabTransferInstance(
-          device, payload_name='test_update.gz',
-          payload_dir='/test/payload/dir')
-      self.PatchObject(lab_xfer, '_RemoteDevserverCall',
-                       side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.PatchObject(retry_util, 'RunCurl',
-                       side_effect=cros_build_lib.RunCommandError(msg=''))
-      self.assertRaises(auto_updater_transfer.ChromiumOSTransferError,
-                        CrOS_LabTransfer._GetPayloadSize)
-
   def testGetPayloadPropsLab(self):
     """Test LabTransfer.GetPayloadProps()."""
     with remote_access.ChromiumOSDeviceHandler(remote_access.TEST_IP) as device: