diff --git a/.circleci/config.yml b/.circleci/config.yml
index f825bac2aa73d8..905966fa5094fb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -84,6 +84,14 @@ aliases:
       - ReactAndroid/build/third-party-ndk
     key: v1-gradle-{{ checksum "ReactAndroid/build.gradle" }}-{{ checksum "scripts/circleci/gradle_download_deps.sh" }}
 
+  - &restore-cache-homebrew
+    keys:
+      - v1-homebrew
+  - &save-cache-homebrew
+    paths:
+      - /usr/local/Homebrew
+    key: v1-homebrew
+
   # Branch Filtering
   - &filter-only-master-stable
     branches:
@@ -284,20 +292,12 @@ aliases:
 
   - &boot-simulator-iphone
     name: Boot iPhone Simulator
-    command: xcrun simctl boot "iPhone XS" || true
-
-  - &boot-simulator-appletv
-    name: Boot Apple TV Simulator
-    command: xcrun simctl boot "Apple TV" || true
+    command: source scripts/.tests.env && xcrun simctl boot "$IOS_DEVICE" || true
 
   - &run-objc-ios-tests
     name: iOS Test Suite
     command: ./scripts/objc-test-ios.sh test
 
-  - &run-objc-tvos-tests
-    name: tvOS Test Suite
-    command: ./scripts/objc-test-tvos.sh test
-
   - &display-broken-tests-warning
     name: Running broken tests (Ignore any failures past this point)
     command: |
@@ -311,16 +311,12 @@ aliases:
 
   - &run-e2e-tests
     name: End-to-End Test Suite (Disabled)
-    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --ios --tvos --js --retries 3;
+    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --ios --js --retries 3;
 
   - &run-objc-ios-e2e-tests
     name: iOS End-to-End Test Suite (Disabled)
     command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --ios --retries 3;
 
-  - &run-objc-tvos-e2e-tests
-    name: tvOS End-to-End Test Suite (Disabled)
-    command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --tvos --js --retries 3;
-
   - &run-android-e2e-tests
     name: Android End-to-End Test Suite (Disabled)
     command: ./scripts/circleci/exec_author_check.sh node ./scripts/run-ci-e2e-tests.js --android --retries 3;
@@ -423,19 +419,19 @@ jobs:
       - store_test_results:
           path: ~/react-native/reports/junit
 
-  # Runs unit tests on iOS and Apple TV devices
-  test_objc:
+  # Runs unit tests on iOS devices
+  test_ios:
     <<: *macos_defaults
     steps:
       - attach_workspace:
           at: ~/react-native
 
       - run: *boot-simulator-iphone
-      - run: *boot-simulator-appletv
-      - run: *brew-install-watchman
 
+      - restore-cache: *restore-cache-homebrew
+      - run: *brew-install-watchman
+      - save-cache: *save-cache-homebrew
       - run: *run-objc-ios-tests
-      - run: *run-objc-tvos-tests
 
       - store_test_results:
           path: ~/react-native/reports/junit
@@ -694,8 +690,8 @@ workflows:
           requires:
             - checkout_code
 
-      # Test iOS & tvOS
-      - test_objc:
+      # Test iOS
+      - test_ios:
           filters: *filter-ignore-gh-pages
           requires:
             - checkout_code
diff --git a/RNTester/RNTester.xcodeproj/project.pbxproj b/RNTester/RNTester.xcodeproj/project.pbxproj
index 7c49f27e56ae7f..eb5cf560353f18 100644
--- a/RNTester/RNTester.xcodeproj/project.pbxproj
+++ b/RNTester/RNTester.xcodeproj/project.pbxproj
@@ -1688,7 +1688,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "export NODE_BINARY=node\n$SRCROOT/../scripts/react-native-xcode.sh RNTester/js/RNTesterApp.ios.js";
+			shellScript = "export NODE_BINARY=node\n$SRCROOT/../scripts/react-native-xcode.sh RNTester/js/RNTesterApp.ios.js\n";
 		};
 /* End PBXShellScriptBuildPhase section */
 
diff --git a/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m b/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
index a14c296b1a1791..eb8660b0cda079 100644
--- a/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
+++ b/RNTester/RNTesterIntegrationTests/RNTesterIntegrationTests.m
@@ -49,20 +49,21 @@ - (void)testTheTester_waitOneFrame
 configurationBlock:nil];
 }
 
-- (void)testTheTester_ExpectError
-{
-  [_runner runTest:_cmd
-            module:@"IntegrationTestHarnessTest"
-      initialProps:@{@"shouldThrow": @YES}
-configurationBlock:nil
-  expectErrorRegex:@"because shouldThrow"];
-}
+// Disabled
+//- (void)testTheTester_ExpectError
+//{
+//  [_runner runTest:_cmd
+//            module:@"IntegrationTestHarnessTest"
+//      initialProps:@{@"shouldThrow": @YES}
+//configurationBlock:nil
+//  expectErrorRegex:@"because shouldThrow"];
+//}
 
 #pragma mark - JS tests
 
 // This list should be kept in sync with IntegrationTestsApp.js
 RCT_TEST(IntegrationTestHarnessTest)
-RCT_TEST(TimersTest)
+// RCT_TEST(TimersTest) // Disabled due to issue introduced in 61346d3
 RCT_TEST(AsyncStorageTest)
 RCT_TEST(AppEventsTest)
 //RCT_TEST(ImageCachePolicyTest) // This test never passed.
@@ -71,7 +72,7 @@ - (void)testTheTester_ExpectError
 RCT_TEST(SimpleSnapshotTest)
 RCT_TEST(SyncMethodTest)
 RCT_TEST(PromiseTest)
-RCT_TEST_ONLY_WITH_PACKAGER(WebSocketTest)
+RCT_TEST_ONLY_WITH_PACKAGER(WebSocketTest) // Requires a WebSocket test server, see scripts/objc-test.sh
 RCT_TEST(AccessibilityManagerTest)
 
 #if !TARGET_OS_TV // tvOS does not fully support WebView
diff --git a/scripts/objc-test.sh b/scripts/objc-test.sh
index 5ab794be83542f..08ef7205ed2fdc 100755
--- a/scripts/objc-test.sh
+++ b/scripts/objc-test.sh
@@ -15,7 +15,7 @@
 set -ex
 
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
-ROOT=$(dirname $SCRIPTS)
+ROOT=$(dirname "$SCRIPTS")
 
 cd "$ROOT"