diff --git a/testing/mozbase/mozrunner/mozrunner/application.py b/testing/mozbase/mozrunner/mozrunner/application.py
index 744225f52180..744f975df82e 100644
--- a/testing/mozbase/mozrunner/mozrunner/application.py
+++ b/testing/mozbase/mozrunner/mozrunner/application.py
@@ -9,7 +9,7 @@ from distutils.spawn import find_executable
 import os
 import posixpath
 
-from mozdevice import ADBDevice
+from mozdevice import ADBDeviceFactory
 from mozprofile import (
     Profile,
     ChromeProfile,
@@ -117,7 +117,7 @@ class FennecContext(RemoteContext):
         if device_serial in devices:
             device = devices[device_serial]
         else:
-            device = ADBDevice(adb=adb_path, device=device_serial)
+            device = ADBDeviceFactory(adb=adb_path, device=device_serial)
             devices[device_serial] = device
         return device
 
diff --git a/testing/mozbase/mozrunner/mozrunner/base/device.py b/testing/mozbase/mozrunner/mozrunner/base/device.py
index 0c7d091f2855..999e46478d61 100644
--- a/testing/mozbase/mozrunner/mozrunner/base/device.py
+++ b/testing/mozbase/mozrunner/mozrunner/base/device.py
@@ -72,6 +72,7 @@ class DeviceRunner(BaseRunner):
         self.device.setup_profile(self.profile)
 
         app = self.app_ctx.remote_process
+        self.device.run_as_package = app
         args = ["-no-remote", "-profile", self.app_ctx.remote_profile]
         args.extend(self.cmdargs)
         env = self._device_env
diff --git a/testing/mozbase/mozrunner/mozrunner/devices/android_device.py b/testing/mozbase/mozrunner/mozrunner/devices/android_device.py
index 42dab6d9135c..cc9c6762d94c 100644
--- a/testing/mozbase/mozrunner/mozrunner/devices/android_device.py
+++ b/testing/mozbase/mozrunner/mozrunner/devices/android_device.py
@@ -19,7 +19,7 @@ from distutils.spawn import find_executable
 from enum import Enum
 
 from mozbuild.base import MozbuildObject
-from mozdevice import ADBHost, ADBDevice
+from mozdevice import ADBHost, ADBDeviceFactory
 from six.moves import input, urllib
 
 EMULATOR_HOME_DIR = os.path.join(os.path.expanduser('~'), '.mozbuild', 'android-device')
@@ -35,7 +35,6 @@ MANIFEST_PATH = 'testing/config/tooltool-manifests'
 SHORT_TIMEOUT = 10
 
 verbose_logging = False
-devices = {}
 
 
 class InstallIntent(Enum):
@@ -86,15 +85,11 @@ AVD_DICT = {
 
 
 def _get_device(substs, device_serial=None):
-    global devices
-    if device_serial in devices:
-        device = devices[device_serial]
-    else:
-        adb_path = _find_sdk_exe(substs, 'adb', False)
-        if not adb_path:
-            adb_path = 'adb'
-        device = ADBDevice(adb=adb_path, verbose=verbose_logging, device=device_serial)
-        devices[device_serial] = device
+
+    adb_path = _find_sdk_exe(substs, 'adb', False)
+    if not adb_path:
+        adb_path = 'adb'
+    device = ADBDeviceFactory(adb=adb_path, verbose=verbose_logging, device=device_serial)
     return device
 
 
@@ -282,6 +277,8 @@ def verify_android_device(build_obj, install=InstallIntent.NO, xre=False, debugg
                 "but I don't know how to install it.\n"
                 "Install it now, then hit Enter " % app)
 
+        device.run_as_package = app
+
     if device_verified and xre:
         # Check whether MOZ_HOST_BIN has been set to a valid xre; if not,
         # prompt to install one.
@@ -318,6 +315,7 @@ def verify_android_device(build_obj, install=InstallIntent.NO, xre=False, debugg
         serial = device_serial or os.environ.get('DEVICE_SERIAL')
         if not serial or ('emulator' not in serial):
             device = _get_device(build_obj.substs, serial)
+            device.run_as_package = app
             try:
                 addr = device.get_ip_address()
                 if not addr:
@@ -349,6 +347,7 @@ def grant_runtime_permissions(build_obj, app, device_serial=None):
     (eg. org.mozilla.geckoview.test).
     """
     device = _get_device(build_obj.substs, device_serial)
+    device.run_as_package = app
     device.grant_runtime_permissions(app)
 
 
diff --git a/testing/mozbase/mozrunner/mozrunner/devices/base.py b/testing/mozbase/mozrunner/mozrunner/devices/base.py
index 0baaa7650fbf..4b95a7d2afa7 100644
--- a/testing/mozbase/mozrunner/mozrunner/devices/base.py
+++ b/testing/mozbase/mozrunner/mozrunner/devices/base.py
@@ -74,7 +74,7 @@ class Device(object):
                 print("WARNING: {}".format(e))
         if os.listdir(local_dump_dir):
             self.device.rm(remote_dump_dir, recursive=True)
-            self.device.mkdir(remote_dump_dir)
+            self.device.mkdir(remote_dump_dir, parents=True)
         return local_dump_dir
 
     def setup_profile(self, profile):
diff --git a/testing/mozbase/mozrunner/setup.py b/testing/mozbase/mozrunner/setup.py
index 0bc1a74756e8..94d2d4e31c72 100644
--- a/testing/mozbase/mozrunner/setup.py
+++ b/testing/mozbase/mozrunner/setup.py
@@ -7,12 +7,12 @@ from __future__ import absolute_import
 from setuptools import setup, find_packages
 
 PACKAGE_NAME = 'mozrunner'
-PACKAGE_VERSION = '8.0.1'
+PACKAGE_VERSION = '8.0.2'
 
 desc = """Reliable start/stop/configuration of Mozilla Applications (Firefox, Thunderbird, etc.)"""
 
 deps = [
-    'mozdevice>=3.0.1,<4',
+    'mozdevice>=4.0.0,<5',
     'mozfile>=1.2',
     'mozinfo>=0.7,<2',
     'mozlog>=6.0',