diff --git a/src/ble/alerts/NoHub.tsx b/src/ble/alerts/NoHub.tsx
index ce80b181..61fc0728 100644
--- a/src/ble/alerts/NoHub.tsx
+++ b/src/ble/alerts/NoHub.tsx
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2022 The Pybricks Authors
 
-import './noHub.scss';
+import './index.scss';
 import { AnchorButton, Button, Intent } from '@blueprintjs/core';
 import React from 'react';
 import { appName, pybricksBluetoothTroubleshootingUrl } from '../../app/constants';
@@ -30,7 +30,7 @@ const NoHub: React.VoidFunctionComponent<NoHubProps> = ({ onFlashFirmware }) =>
                 })}
             </p>
             <p>{i18n.translate(I18nId.NoHubSuggestion2)}</p>
-            <div className="pb-ble-alerts-noHub-buttons">
+            <div className="pb-ble-alerts-buttons">
                 <Button icon="download" onClick={onFlashFirmware}>
                     {i18n.translate(I18nId.NoHubFlashFirmwareButton)}
                 </Button>
diff --git a/src/ble/alerts/OldFirmware.tsx b/src/ble/alerts/OldFirmware.tsx
new file mode 100644
index 00000000..a396bbc0
--- /dev/null
+++ b/src/ble/alerts/OldFirmware.tsx
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2022 The Pybricks Authors
+
+import './index.scss';
+import { Button, Intent } from '@blueprintjs/core';
+import React from 'react';
+import { CreateToast } from '../../i18nToaster';
+import { I18nId, useI18n } from './i18n';
+
+type OldFirmwareProps = {
+    onFlashFirmware: () => void;
+};
+
+const OldFirmware: React.VoidFunctionComponent<OldFirmwareProps> = ({
+    onFlashFirmware,
+}) => {
+    const i18n = useI18n();
+
+    return (
+        <>
+            <p>{i18n.translate(I18nId.OldFirmwareMessage)}</p>
+            <div className="pb-ble-alerts-buttons">
+                <Button icon="download" onClick={onFlashFirmware}>
+                    {i18n.translate(I18nId.OldFirmwareFlashFirmwareLabel)}
+                </Button>
+            </div>
+        </>
+    );
+};
+
+export const oldFirmware: CreateToast<never, 'dismiss' | 'flashFirmware'> = (
+    onAction,
+) => {
+    return {
+        message: <OldFirmware onFlashFirmware={() => onAction('flashFirmware')} />,
+        icon: 'info-sign',
+        intent: Intent.PRIMARY,
+        onDismiss: () => onAction('dismiss'),
+    };
+};
diff --git a/src/ble/alerts/i18n.ts b/src/ble/alerts/i18n.ts
index 81045edd..20fca0a1 100644
--- a/src/ble/alerts/i18n.ts
+++ b/src/ble/alerts/i18n.ts
@@ -24,4 +24,6 @@ export enum I18nId {
     NoHubSuggestion2 = 'noHub.suggestion2',
     NoHubFlashFirmwareButton = 'noHub.flashFirmwareButton',
     NoHubTroubleshootButton = 'noHub.troubleshootButton',
+    OldFirmwareMessage = 'oldFirmware.message',
+    OldFirmwareFlashFirmwareLabel = 'oldFirmware.flashFirmware.label',
 }
diff --git a/src/ble/alerts/noHub.scss b/src/ble/alerts/index.scss
similarity index 86%
rename from src/ble/alerts/noHub.scss
rename to src/ble/alerts/index.scss
index c011e9a3..7771c733 100644
--- a/src/ble/alerts/noHub.scss
+++ b/src/ble/alerts/index.scss
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2022 The Pybricks Authors
 
-.pb-ble-alerts-noHub {
+.pb-ble-alerts {
     &-buttons {
         display: flex;
         gap: 10px;
diff --git a/src/ble/alerts/index.ts b/src/ble/alerts/index.ts
index 2e5ec4dd..22b7ffc0 100644
--- a/src/ble/alerts/index.ts
+++ b/src/ble/alerts/index.ts
@@ -6,6 +6,14 @@ import { missingService } from './MissingService';
 import { noGatt } from './NoGatt';
 import { noHub } from './NoHub';
 import { noWebBluetooth } from './NoWebBluetooth';
+import { oldFirmware } from './OldFirmware';
 
 // gathers all of the alert creation functions for passing up to the top level
-export default { bluetoothNotAvailable, missingService, noGatt, noHub, noWebBluetooth };
+export default {
+    bluetoothNotAvailable,
+    missingService,
+    noGatt,
+    noHub,
+    noWebBluetooth,
+    oldFirmware,
+};
diff --git a/src/ble/alerts/translations/en.json b/src/ble/alerts/translations/en.json
index 94c9f34d..fe9bfd18 100644
--- a/src/ble/alerts/translations/en.json
+++ b/src/ble/alerts/translations/en.json
@@ -23,5 +23,11 @@
         "suggestion2": "If you have flashed the Pybricks firmware to the hub already and you are still having problems connecting, please visit the troubleshooting guide.",
         "flashFirmwareButton": "Flash Firmware",
         "troubleshootButton": "Troubleshooting Tips"
+    },
+    "oldFirmware": {
+        "message": "A new firmware version is available for this hub. Please install the latest version to use all new features.",
+        "flashFirmware": {
+            "label": "Flash firmware now"
+        }
     }
 }
diff --git a/src/ble/sagas.test.ts b/src/ble/sagas.test.ts
index f58f2086..5b973691 100644
--- a/src/ble/sagas.test.ts
+++ b/src/ble/sagas.test.ts
@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2022 The Pybricks Authors
 
-import { HubType } from '@pybricks/firmware';
 import { MockProxy, mock } from 'jest-mock-extended';
 import { AsyncSaga } from '../../test';
 import { alertsDidShowAlert, alertsShowAlert } from '../alerts/actions';
@@ -17,6 +16,7 @@ import {
     softwareRevisionStringUUID,
 } from '../ble-device-info-service/protocol';
 import { encodeInfo } from '../ble-device-info-service/protocol.test';
+import { HubType } from '../ble-lwp3-service/protocol';
 import {
     nordicUartRxCharUUID,
     nordicUartServiceUUID,
@@ -204,6 +204,8 @@ async function runConnectUntil(saga: AsyncSaga, point: ConnectRunPoint): Promise
         bleDIServiceDidReceiveFirmwareRevision('3.2.0b2'),
     );
 
+    await expect(saga.take()).resolves.toEqual(alertsShowAlert('ble', 'oldFirmware'));
+
     if (point === ConnectRunPoint.DidReceiveFirmwareRevision) {
         return;
     }
diff --git a/src/ble/sagas.ts b/src/ble/sagas.ts
index 87d43e1f..f291af2a 100644
--- a/src/ble/sagas.ts
+++ b/src/ble/sagas.ts
@@ -6,7 +6,9 @@
 // TODO: this file needs to be combined with the firmware BLE connection management
 // to reduce duplicated code
 
+import { firmwareVersion } from '@pybricks/firmware';
 import { Task, buffers, eventChannel } from 'redux-saga';
+import { satisfies } from 'semver';
 import {
     call,
     cancel,
@@ -14,6 +16,7 @@ import {
     fork,
     put,
     select,
+    spawn,
     take,
     takeEvery,
 } from 'typed-redux-saga/macro';
@@ -54,6 +57,7 @@ import {
 import { firmwareInstallPybricks } from '../firmware/actions';
 import { RootState } from '../reducers';
 import { ensureError } from '../utils';
+import { pythonVersionToSemver } from '../utils/version';
 import {
     bleConnectPybricks as bleConnectPybricks,
     bleDidConnectPybricks,
@@ -219,6 +223,35 @@ function* handleBleConnectPybricks(): Generator {
         );
         yield* put(bleDIServiceDidReceiveFirmwareRevision(firmwareRevision));
 
+        // notify user if old firmware
+        if (
+            satisfies(
+                pythonVersionToSemver(firmwareRevision),
+                `<${pythonVersionToSemver(firmwareVersion)}`,
+            )
+        ) {
+            yield* put(alertsShowAlert('ble', 'oldFirmware'));
+
+            // initiate flashing firmware if user requested
+            const flashIfRequested = function* () {
+                const { action } = yield* take<
+                    ReturnType<typeof alertsDidShowAlert<'ble', 'oldFirmware'>>
+                >(
+                    alertsDidShowAlert.when(
+                        (a) => a.domain === 'ble' && a.specific === 'oldFirmware',
+                    ),
+                );
+
+                if (action === 'flashFirmware') {
+                    yield* put(firmwareInstallPybricks());
+                }
+            };
+
+            // have to spawn so that we don't block the task and it still works
+            // if parent task ends
+            yield* spawn(flashIfRequested);
+        }
+
         const softwareVersionChar = yield* call(() =>
             deviceInfoService.getCharacteristic(softwareRevisionStringUUID),
         );
diff --git a/src/notifications/i18n.ts b/src/notifications/i18n.ts
index e8fd902d..eceeb4b2 100644
--- a/src/notifications/i18n.ts
+++ b/src/notifications/i18n.ts
@@ -39,5 +39,4 @@ export enum I18nId {
     ServiceWorkerUpdateMessage = 'serviceWorker.update.message',
     ServiceWorkerUpdateAction = 'serviceWorker.update.action',
     MpyError = 'mpy.error',
-    CheckFirmwareTooOld = 'check.firmwareTooOld',
 }
diff --git a/src/notifications/sagas.test.ts b/src/notifications/sagas.test.ts
index ed48626c..4ad88de6 100644
--- a/src/notifications/sagas.test.ts
+++ b/src/notifications/sagas.test.ts
@@ -2,16 +2,11 @@
 // Copyright (c) 2021-2022 The Pybricks Authors
 
 import { IToaster } from '@blueprintjs/core';
-import {
-    FirmwareReaderError,
-    FirmwareReaderErrorCode,
-    firmwareVersion,
-} from '@pybricks/firmware';
+import { FirmwareReaderError, FirmwareReaderErrorCode } from '@pybricks/firmware';
 import { I18nManager } from '@shopify/react-i18n';
 import { AnyAction } from 'redux';
 import { AsyncSaga, uuid } from '../../test';
 import { appDidCheckForUpdate } from '../app/actions';
-import { bleDIServiceDidReceiveFirmwareRevision } from '../ble-device-info-service/actions';
 import { editorDidFailToOpenFile } from '../editor/actions';
 import { EditorError } from '../editor/error';
 import {
@@ -91,7 +86,6 @@ test.each([
     didFailToFinish(FailToFinishReasonType.FirmwareSize),
     didFailToFinish(FailToFinishReasonType.Unknown, new Error('test error')),
     appDidCheckForUpdate(false),
-    bleDIServiceDidReceiveFirmwareRevision('3.0.0'),
     fileStorageDidFailToInitialize(new Error('test error')),
     explorerDidFailToImportFiles(new Error('test error')),
     explorerDidFailToCreateNewFile(new Error('test error')),
@@ -118,7 +112,6 @@ test.each([
     didFailToFinish(FailToFinishReasonType.FailedToConnect),
     serviceWorkerDidSucceed(),
     appDidCheckForUpdate(true),
-    bleDIServiceDidReceiveFirmwareRevision(firmwareVersion),
     explorerDidFailToImportFiles(new DOMException('test message', 'AbortError')),
     explorerDidFailToCreateNewFile(new DOMException('test message', 'AbortError')),
     explorerDidFailToDuplicateFile(
diff --git a/src/notifications/sagas.ts b/src/notifications/sagas.ts
index 33636225..89a84665 100644
--- a/src/notifications/sagas.ts
+++ b/src/notifications/sagas.ts
@@ -4,16 +4,13 @@
 // Saga for managing notifications (toasts)
 
 import { ActionProps, IToaster, IconName, Intent, LinkProps } from '@blueprintjs/core';
-import { firmwareVersion } from '@pybricks/firmware';
 import { Replacements } from '@shopify/react-i18n';
 import React from 'react';
 import { channel } from 'redux-saga';
-import * as semver from 'semver';
 import { delay, getContext, put, take, takeEvery } from 'typed-redux-saga/macro';
 import { getAlertProps } from '../alerts';
 import { appDidCheckForUpdate, appReload } from '../app/actions';
 import { appName } from '../app/constants';
-import { bleDIServiceDidReceiveFirmwareRevision } from '../ble-device-info-service/actions';
 import { editorDidFailToOpenFile } from '../editor/actions';
 import { EditorError } from '../editor/error';
 import {
@@ -31,7 +28,6 @@ import {
 } from '../lwp3-bootloader/actions';
 import { didCompile, didFailToCompile } from '../mpy/actions';
 import { serviceWorkerDidUpdate } from '../service-worker/actions';
-import { pythonVersionToSemver } from '../utils/version';
 import NotificationAction from './NotificationAction';
 import NotificationMessage from './NotificationMessage';
 import { add as addNotification } from './actions';
@@ -309,21 +305,6 @@ function* showNoUpdateInfo(action: ReturnType<typeof appDidCheckForUpdate>): Gen
     });
 }
 
-function* checkVersion(
-    action: ReturnType<typeof bleDIServiceDidReceiveFirmwareRevision>,
-): Generator {
-    // ensure the actual hub firmware version is the same as the shipped
-    // firmware version or newer
-    if (
-        !semver.satisfies(
-            pythonVersionToSemver(action.version),
-            `>=${pythonVersionToSemver(firmwareVersion)}`,
-        )
-    ) {
-        yield* showSingleton(Level.Error, I18nId.CheckFirmwareTooOld);
-    }
-}
-
 function* showFileStorageFailToInitialize(
     action: ReturnType<typeof fileStorageDidFailToInitialize>,
 ): Generator {
@@ -405,7 +386,6 @@ export default function* (): Generator {
     yield* takeEvery(addNotification, handleAddNotification);
     yield* takeEvery(serviceWorkerDidUpdate, showServiceWorkerUpdate);
     yield* takeEvery(appDidCheckForUpdate, showNoUpdateInfo);
-    yield* takeEvery(bleDIServiceDidReceiveFirmwareRevision, checkVersion);
     yield* takeEvery(fileStorageDidFailToInitialize, showFileStorageFailToInitialize);
     yield* takeEvery(explorerDidFailToImportFiles, showExplorerFailToImportFiles);
     yield* takeEvery(explorerDidFailToCreateNewFile, showExplorerFailToCreateFile);
diff --git a/src/notifications/translations/en.json b/src/notifications/translations/en.json
index f2d956aa..5e5de875 100644
--- a/src/notifications/translations/en.json
+++ b/src/notifications/translations/en.json
@@ -43,8 +43,5 @@
             "message": "A new version of {appName} is available. Click {action} to start using the new version.",
             "action": "Restart"
         }
-    },
-    "check": {
-        "firmwareTooOld": "A new firmware version is available for this hub. Please install the latest version to use all new features."
     }
 }