diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 957a6be6..27d00cd9 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -5,9 +5,8 @@
     <uses-sdk
         android:minSdkVersion="19"
         android:targetSdkVersion="21" />
-<!--
+
     <uses-permission android:name="android.permission.INTERNET" />
--->
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FwAppInstallerActivity.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FwAppInstallerActivity.java
index 9f85914d..87dc334e 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FwAppInstallerActivity.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FwAppInstallerActivity.java
@@ -47,7 +47,7 @@ public class FwAppInstallerActivity extends Activity implements InstallActivity
             } else if (action.equals(GBDevice.ACTION_DEVICE_CHANGED)) {
                 device = intent.getParcelableExtra(GBDevice.EXTRA_DEVICE);
                 if (device != null) {
-                    if (!device.isConnected()) {
+                    if (!device.isInitialized()) {
                         setInstallEnabled(false);
                         if (mayConnect) {
                             GB.toast(FwAppInstallerActivity.this, getString(R.string.connecting), Toast.LENGTH_SHORT, GB.INFO);
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWInstallHandler.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWInstallHandler.java
index f7043c10..cae52c63 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWInstallHandler.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWInstallHandler.java
@@ -17,12 +17,11 @@ import nodomain.freeyourgadget.gadgetbridge.util.FileUtils;
 public class PBWInstallHandler implements InstallHandler {
 
     private final Context mContext;
-    private final PBWReader mPBWReader;
+    private PBWReader mPBWReader;
     private final Uri mUri;
 
     public PBWInstallHandler(Uri uri, Context context) {
         mContext = context;
-        mPBWReader = new PBWReader(uri, context, ""); // FIXME: we should know the platform here
         mUri = uri;
     }
 
@@ -34,6 +33,13 @@ public class PBWInstallHandler implements InstallHandler {
             return;
         }
 
+        mPBWReader = new PBWReader(mUri, mContext, device.getHardwareVersion().equals("dvt") ? "basalt" : "aplite");
+        if (!mPBWReader.isValid()) {
+            installActivity.setInfoText("pbw/pbz is broken or incompatible with your Hardware or Firmware.");
+            installActivity.setInstallEnabled(false);
+            return;
+        }
+
         if (mPBWReader.isFirmware()) {
             String hwRevision = mPBWReader.getHWRevision();
             if (hwRevision != null && hwRevision.equals(device.getHardwareVersion())) {
@@ -77,7 +83,8 @@ public class PBWInstallHandler implements InstallHandler {
     }
 
     public boolean isValid() {
-        return mPBWReader.isValid();
+        // always pretend it is valid, as we cant know yet about hw/fw version
+        return true;
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java
index 4c97bfdb..b9f85a67 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/pebble/PBWReader.java
@@ -147,7 +147,6 @@ public class PBWReader {
                         if (appName != null && appCreator != null && appVersion != null) {
                             // FIXME: dont assume WATCHFACE
                             app = new GBDeviceApp(uuid, appName, appCreator, appVersion, GBDeviceApp.Type.WATCHFACE);
-                            isValid = true;
                         }
 
                     } catch (JSONException e) {
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleIoThread.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleIoThread.java
index 44a113c6..68758bf2 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleIoThread.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleIoThread.java
@@ -480,10 +480,12 @@ public class PebbleIoThread extends GBDeviceIoThread {
 
         mPBWReader = null;
         mIsInstalling = false;
-        try {
-            mZis.close();
-        } catch (IOException e) {
-            // ignore
+        if (mZis != null) {
+            try {
+                mZis.close();
+            } catch (IOException e) {
+                // ignore
+            }
         }
         mZis = null;
         mAppInstallToken = -1;