diff --git a/platformio/commands/upgrade.py b/platformio/commands/upgrade.py
index 93f82e6c..5f81807d 100644
--- a/platformio/commands/upgrade.py
+++ b/platformio/commands/upgrade.py
@@ -89,7 +89,7 @@ WARNING! Don't use `sudo` for the rest PlatformIO commands.
 
 def get_latest_version():
     try:
-        if not isinstance(VERSION[2], int):
+        if not str(VERSION[2]).isdigit():
             try:
                 return get_develop_latest_version()
             except:  # pylint: disable=bare-except
diff --git a/platformio/maintenance.py b/platformio/maintenance.py
index 0f959a23..0d6ac489 100644
--- a/platformio/maintenance.py
+++ b/platformio/maintenance.py
@@ -75,7 +75,7 @@ class Upgrader(object):
             util.pepver_to_semver(to_version))
 
         self._upgraders = [
-            (semantic_version.Version("3.0.0"), self._upgrade_to_3_0_0)
+            (semantic_version.Version("3.0.0-a1"), self._upgrade_to_3_0_0)
         ]
 
     def run(self, ctx):
diff --git a/platformio/managers/platform.py b/platformio/managers/platform.py
index 8bfee505..00af2d37 100644
--- a/platformio/managers/platform.py
+++ b/platformio/managers/platform.py
@@ -524,7 +524,8 @@ class PlatformBoardConfig(object):
             "name": self._manifest['name'],
             "platform": self._manifest.get("platform"),
             "mcu": self._manifest.get("build", {}).get("mcu", "").upper(),
-            "fcpu": int(self._manifest.get("build", {}).get("f_cpu", "")[:-1]),
+            "fcpu":
+            int(self._manifest.get("build", {}).get("f_cpu", "0L")[:-1]),
             "ram": self._manifest.get("upload", {}).get("maximum_ram_size", 0),
             "rom": self._manifest.get("upload", {}).get("maximum_size", 0),
             "frameworks": self._manifest.get("frameworks"),
diff --git a/tests/test_maintenance.py b/tests/test_maintenance.py
new file mode 100644
index 00000000..d444fe1c
--- /dev/null
+++ b/tests/test_maintenance.py
@@ -0,0 +1,193 @@
+# Copyright 2014-present PlatformIO <contact@platformio.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+from time import time
+
+from platformio import app, maintenance
+from platformio.__main__ import cli as cli_pio
+from platformio.commands import upgrade as cmd_upgrade
+from platformio.managers.platform import PlatformManager
+
+
+def test_after_upgrade_2_to_3(clirunner, validate_cliresult,
+                              isolated_pio_home):
+    app.set_state_item("last_version", "2.11.2")
+    app.set_state_item("installed_platforms", ["native"])
+
+    # generate PlatformIO 2.0 boards
+    boards = isolated_pio_home.mkdir("boards")
+    board_ids = set()
+    for prefix in ("foo", "bar"):
+        data = {}
+        for i in range(3):
+            board_id = "board_%s_%d" % (prefix, i)
+            board_ids.add(board_id)
+            data[board_id] = {
+                "name": "Board %s #%d" % (prefix, i),
+                "url": "",
+                "vendor": ""
+            }
+        boards.join(prefix + ".json").write(json.dumps(data))
+
+    result = clirunner.invoke(cli_pio, ["settings", "get"])
+    validate_cliresult(result)
+    assert "upgraded to 3"
+    assert isolated_pio_home.join("platforms", "native",
+                                  "platform.json").check()
+
+    # check PlatformIO 3.0 boards
+    assert board_ids == set([p.basename[:-5] for p in boards.listdir()])
+
+    result = clirunner.invoke(cli_pio,
+                              ["boards", "--installed", "--json-output"])
+    validate_cliresult(result)
+    assert board_ids == set([b['id'] for b in json.loads(result.output)])
+
+
+def test_after_upgrade_silence(clirunner, validate_cliresult,
+                               isolated_pio_home):
+    app.set_state_item("last_version", "2.11.2")
+    result = clirunner.invoke(cli_pio, ["boards", "--json-output"])
+    validate_cliresult(result)
+    boards = json.loads(result.output)
+    assert any([b['id'] == "uno" for b in boards])
+
+
+def test_check_pio_upgrade(clirunner, validate_cliresult, isolated_pio_home):
+
+    def _patch_pio_version(version):
+        maintenance.__version__ = version
+        cmd_upgrade.VERSION = version.split(".", 3)
+
+    interval = int(app.get_setting("check_platformio_interval")) * 3600 * 24
+    last_check = {"platformio_upgrade": time() - interval - 1}
+    origin_version = maintenance.__version__
+
+    # check development version
+    _patch_pio_version("3.0.0-a1")
+    app.set_state_item("last_check", last_check)
+    result = clirunner.invoke(cli_pio, ["platform", "list"])
+    validate_cliresult(result)
+    assert "There is a new version" in result.output
+    assert "Please upgrade" in result.output
+
+    # check stable version
+    _patch_pio_version("2.11.0")
+    app.set_state_item("last_check", last_check)
+    result = clirunner.invoke(cli_pio, ["platform", "list"])
+    validate_cliresult(result)
+    assert "There is a new version" in result.output
+    assert "Please upgrade" in result.output
+
+    # restore original version
+    _patch_pio_version(origin_version)
+
+
+def test_check_lib_updates(clirunner, validate_cliresult, isolated_pio_home):
+    # install obsolete library
+    result = clirunner.invoke(cli_pio, ["lib", "-g", "install", "Json@<5.4"])
+    validate_cliresult(result)
+
+    # reset check time
+    interval = int(app.get_setting("check_libraries_interval")) * 3600 * 24
+    last_check = {"libraries_update": time() - interval - 1}
+    app.set_state_item("last_check", last_check)
+
+    result = clirunner.invoke(cli_pio, ["lib", "-g", "list"])
+    validate_cliresult(result)
+    assert "There are the new updates for libraries (Json)" in result.output
+
+
+def test_check_and_update_libraries(clirunner, validate_cliresult,
+                                    isolated_pio_home):
+    # enable library auto-updates
+    result = clirunner.invoke(
+        cli_pio, ["settings", "set", "auto_update_libraries", "Yes"])
+
+    # reset check time
+    interval = int(app.get_setting("check_libraries_interval")) * 3600 * 24
+    last_check = {"libraries_update": time() - interval - 1}
+    app.set_state_item("last_check", last_check)
+
+    # fetch installed version
+    result = clirunner.invoke(cli_pio, ["lib", "-g", "list", "--json-output"])
+    validate_cliresult(result)
+    prev_data = json.loads(result.output)
+    assert len(prev_data) == 1
+
+    # initiate auto-updating
+    result = clirunner.invoke(cli_pio, ["lib", "-g", "show", "Json"])
+    validate_cliresult(result)
+    assert "There are the new updates for libraries (Json)" in result.output
+    assert "Please wait while updating libraries" in result.output
+    assert "[Out-of-date]" in result.output
+
+    # check updated version
+    result = clirunner.invoke(cli_pio, ["lib", "-g", "list", "--json-output"])
+    validate_cliresult(result)
+    assert prev_data[0]['version'] != json.loads(result.output)[0]['version']
+
+
+def test_check_platform_updates(clirunner, validate_cliresult,
+                                isolated_pio_home):
+    # install obsolete platform
+    result = clirunner.invoke(cli_pio, ["platform", "install", "native"])
+    validate_cliresult(result)
+    manifest_path = isolated_pio_home.join("platforms", "native",
+                                           "platform.json")
+    manifest = json.loads(manifest_path.read())
+    manifest['version'] = "0.0.0"
+    manifest_path.write(json.dumps(manifest))
+    # reset cached manifests
+    PlatformManager().reset_cache()
+
+    # reset check time
+    interval = int(app.get_setting("check_platforms_interval")) * 3600 * 24
+    last_check = {"platforms_update": time() - interval - 1}
+    app.set_state_item("last_check", last_check)
+
+    result = clirunner.invoke(cli_pio, ["platform", "list"])
+    validate_cliresult(result)
+    assert "There are the new updates for platforms (native)" in result.output
+
+
+def test_check_and_update_platforms(clirunner, validate_cliresult,
+                                    isolated_pio_home):
+    # enable library auto-updates
+    result = clirunner.invoke(
+        cli_pio, ["settings", "set", "auto_update_platforms", "Yes"])
+
+    # reset check time
+    interval = int(app.get_setting("check_platforms_interval")) * 3600 * 24
+    last_check = {"platforms_update": time() - interval - 1}
+    app.set_state_item("last_check", last_check)
+
+    # fetch installed version
+    result = clirunner.invoke(cli_pio, ["platform", "list", "--json-output"])
+    validate_cliresult(result)
+    prev_data = json.loads(result.output)
+    assert len(prev_data) == 1
+
+    # initiate auto-updating
+    result = clirunner.invoke(cli_pio, ["platform", "show", "native"])
+    validate_cliresult(result)
+    assert "There are the new updates for platforms (native)" in result.output
+    assert "Please wait while updating platforms" in result.output
+    assert "[Out-of-date]" in result.output
+
+    # check updated version
+    result = clirunner.invoke(cli_pio, ["platform", "list", "--json-output"])
+    validate_cliresult(result)
+    assert prev_data[0]['version'] != json.loads(result.output)[0]['version']