diff --git a/ultrasonic/src/main/AndroidManifest.xml b/ultrasonic/src/main/AndroidManifest.xml
index 0e955a94..8c3f2dde 100644
--- a/ultrasonic/src/main/AndroidManifest.xml
+++ b/ultrasonic/src/main/AndroidManifest.xml
@@ -86,7 +86,7 @@
             </intent-filter>
         </receiver>
         <receiver android:name=".receiver.BluetoothIntentReceiver"
-            android:exported="false">
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.bluetooth.device.action.ACL_CONNECTED"/>
                 <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED"/>
diff --git a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/Downloader.kt b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/Downloader.kt
index b1d4b1b7..d36854a6 100644
--- a/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/Downloader.kt
+++ b/ultrasonic/src/main/kotlin/org/moire/ultrasonic/service/Downloader.kt
@@ -353,7 +353,7 @@ class Downloader(
     }
 
     companion object {
-        const val PARALLEL_DOWNLOADS = 3
+        const val PARALLEL_DOWNLOADS = 2
         const val CHECK_INTERVAL = 5000L
     }