diff --git a/tools/python/py_proto/__init__.py b/tools/python/py_proto/__init__.py
index da5f48fd89e22d2dda0494b83a7cb4db378f79aa..c94fa6f360b9e6145c64d97deef10bfcf2db181d 100644
--- a/tools/python/py_proto/__init__.py
+++ b/tools/python/py_proto/__init__.py
@@ -24,11 +24,16 @@ cwd = os.path.dirname(__file__)
 
 # TODO: Remove bazel deps
 try:
-    device.execute("bazel build //mace/proto:mace_py")
-    device.execute("cp -f bazel-genfiles/mace/proto/mace_pb2.py %s" % cwd)
-
-    device.execute("bazel build //third_party/caffe:caffe_py")
-    device.execute(
-        "cp -f bazel-genfiles/third_party/caffe/caffe_pb2.py %s" % cwd)
+    device.execute("bazel version")
 except:  # noqa
     MaceLogger.warning("No bazel, use cmake.")
+else:
+    try:
+        device.execute("bazel build //mace/proto:mace_py")
+        device.execute("cp -f bazel-genfiles/mace/proto/mace_pb2.py %s" % cwd)
+
+        device.execute("bazel build //third_party/caffe:caffe_py")
+        device.execute(
+            "cp -f bazel-genfiles/third_party/caffe/caffe_pb2.py %s" % cwd)
+    except:  # noqa
+        MaceLogger.error("Failed in proto files' building")
diff --git a/tools/python/run_model.py b/tools/python/run_model.py
index 52e081fae179f612cfff8e701a6f6fbfffe6ac3a..345b725be1b656445f787ff3383dd72925ec3d11 100644
--- a/tools/python/run_model.py
+++ b/tools/python/run_model.py
@@ -73,7 +73,7 @@ def run_models(flags, args):
     MaceLogger.info("Run on devices: %s" % run_devices)
 
     for device_id in run_devices:
-        dev = device.crete_device(flags.target_abi, device_id)
+        dev = device.create_device(flags.target_abi, device_id)
         run_models_for_device(flags, args, dev)
 
 
diff --git a/tools/python/run_target.py b/tools/python/run_target.py
index 370b24238b59501509695aaba89063aa0a04b252..b30dd192548ebc651031ff210ae72fbe43955c06 100644
--- a/tools/python/run_target.py
+++ b/tools/python/run_target.py
@@ -44,7 +44,7 @@ def run_target(target_abi, install_dir, target_obj, device_ids="all"):
 
     for device_id in run_devices:
         # initiate device
-        dev = device.crete_device(target_abi, device_id)
+        dev = device.create_device(target_abi, device_id)
 
         # reinstall target
         print("Install target from %s to %s" % (target_obj.path, install_dir))
diff --git a/tools/python/utils/device.py b/tools/python/utils/device.py
index 579d70ff284e28cb9ba689cceb399504c07973e1..908a0dba69fd955400aa6fb3f2c73321e3b9b0ac 100644
--- a/tools/python/utils/device.py
+++ b/tools/python/utils/device.py
@@ -94,7 +94,10 @@ class HostDevice(Device):
 
         if install_dir.strip() and install_dir != os.path.dirname(target.path):
             execute("mkdir -p %s" % install_dir)
-            execute("cp %s %s" % (target.path, install_dir))
+            if os.path.isdir(target.path):
+                execute("cp %s/* %s" % (target.path, install_dir))
+            else:
+                execute("cp %s %s" % (target.path, install_dir))
             for lib in target.libs:
                 execute("cp %s %s" % (lib, install_dir))
 
@@ -285,7 +288,7 @@ def device_class(target_abi):
     return globals()[device_dispatch[target_abi]]
 
 
-def crete_device(target_abi, device_id=None):
+def create_device(target_abi, device_id=None):
     return device_class(target_abi)(device_id, target_abi)