diff --git a/platform/firefox/vapi-background.js b/platform/firefox/vapi-background.js
index 907bafd..7272b8e 100644
--- a/platform/firefox/vapi-background.js
+++ b/platform/firefox/vapi-background.js
@@ -295,9 +295,11 @@ var windowWatcher = {
         if ( tabBrowser.deck ) {
             // Fennec
             tabContainer = tabBrowser.deck;
+            tabContainer.addEventListener('DOMTitleChanged', tabWatcher.onFennecLocationChange);
         } else if ( tabBrowser.tabContainer ) {
             // desktop Firefox
             tabContainer = tabBrowser.tabContainer;
+            tabBrowser.addTabsProgressListener(tabWatcher);
             vAPI.contextMenu.register(this.document);
         } else {
             return;
@@ -319,6 +321,8 @@ var windowWatcher = {
 /******************************************************************************/
 
 var tabWatcher = {
+    SAME_DOCUMENT: Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT,
+
     onTabClose: function({target}) {
         // target is tab in Firefox, browser in Fennec
         var tabId = vAPI.tabs.getTabId(target);
@@ -347,6 +351,49 @@ var tabWatcher = {
             });
         }
     },
+
+    onLocationChange: function(browser, webProgress, request, location, flags) {
+        if ( !webProgress.isTopLevel ) {
+            return;
+        }
+
+        var tabId = vAPI.tabs.getTabId(browser);
+
+        // LOCATION_CHANGE_SAME_DOCUMENT = "did not load a new document"
+        if ( flags & this.SAME_DOCUMENT ) {
+            vAPI.tabs.onUpdated(tabId, {url: location.asciiSpec}, {
+                frameId: 0,
+                tabId: tabId,
+                url: browser.currentURI.asciiSpec
+            });
+            return;
+        }
+
+        // https://github.com/gorhill/uBlock/issues/105
+        // Allow any kind of pages
+        vAPI.tabs.onNavigation({
+            frameId: 0,
+            tabId: tabId,
+            url: location.asciiSpec
+        });
+    },
+
+    onFennecLocationChange: function({target: doc}) {
+        // Fennec "equivalent" to onLocationChange
+        // note that DOMTitleChanged is selected as it fires very early
+        // (before DOMContentLoaded), and it does fire even if there is no title
+        var win = doc.defaultView;
+        if ( win !== win.top ) {
+            return;
+        }
+
+        vAPI.tabs.onNavigation({
+            frameId: 0,
+            tabId: vAPI.tabs.getTabId(getOwnerWindow(win).BrowserApp.getTabForWindow(win)),
+            url: Services.io.newURI(win.location.href, null, null).asciiSpec
+        });
+    }
+
 };
 
 /******************************************************************************/
@@ -398,6 +445,7 @@ vAPI.tabs = {};
 /******************************************************************************/
 
 vAPI.tabs.registerListeners = function() {
+    // onNavigation and onUpdated handled with tabWatcher.onLocationChange
     // onClosed - handled in tabWatcher.onTabClose
     // onPopup - handled in httpObserver.handlePopup
 
@@ -423,6 +471,7 @@ vAPI.tabs.registerListeners = function() {
             if ( tabBrowser.deck ) {
                 // Fennec
                 tabContainer = tabBrowser.deck;
+                tabContainer.removeEventListener('DOMTitleChanged', tabWatcher.onFennecLocationChange);
             } else if ( tabBrowser.tabContainer ) {
                 tabContainer = tabBrowser.tabContainer;
                 tabBrowser.removeTabsProgressListener(tabWatcher);
@@ -662,6 +711,24 @@ vAPI.tabs.open = function(details) {
 
 /******************************************************************************/
 
+// Replace the URL of a tab. Noop if the tab does not exist.
+
+vAPI.tabs.replace = function(tabId, url) {
+    var targetURL = url;
+
+    // extension pages
+    if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
+        targetURL = vAPI.getURL(targetURL);
+    }
+
+    var tab = this.getTabsForIds(tabId);
+    if ( tab ) {
+        getBrowserForTab(tab).loadURI(targetURL);
+    }
+};
+
+/******************************************************************************/
+
 vAPI.tabs._remove = function(tab, tabBrowser) {
     if ( vAPI.fennec ) {
         tabBrowser.closeTab(tab);
@@ -1090,18 +1157,13 @@ var httpObserver = {
             return true;
         }
 
-        if ( result.redirectUrl ) {
-            if ( type === 'main_frame' ) {
-                channel.cancel(this.ABORT);
-                vAPI.tabs.open({ tabId: details.tabId, url: result.redirectUrl });
-                return true;
-            }
-            /*channel.redirectionLimit = 1;
+        /*if ( result.redirectUrl ) {
+            channel.redirectionLimit = 1;
             channel.redirectTo(
                 Services.io.newURI(result.redirectUrl, null, null)
             );
-            return true;*/
-        }
+            return true;
+        }*/
 
         return false;
     },
@@ -1203,6 +1265,14 @@ var httpObserver = {
             return;
         }
 
+        if ( vAPI.fennec && lastRequest.type === this.MAIN_FRAME ) {
+            vAPI.tabs.onNavigation({
+                frameId: 0,
+                tabId: lastRequest.tabId,
+                url: URI.asciiSpec
+            });
+        }
+
         // If request is not handled we may use the data in on-modify-request
         if ( channel instanceof Ci.nsIWritablePropertyBag ) {
             channel.setProperty(this.REQDATAKEY, [
@@ -1317,6 +1387,9 @@ vAPI.net.registerListeners = function() {
             type: details.type,
             url: details.url
         };
+        if ( details.attrSrc !== undefined ) {
+            lastRequest[0].attrSrc = details.attrSrc;
+        }
     };
 
     vAPI.messaging.globalMessageManager.addMessageListener(
@@ -1324,38 +1397,6 @@ vAPI.net.registerListeners = function() {
         shouldLoadListener
     );
 
-    var locationChangedListenerMessageName = location.host + ':locationChanged';
-    var locationChangedListener = function(e) {
-        var details = e.data;
-        var browser = e.target;
-        var tabId = vAPI.tabs.getTabId(browser);
-        
-        //console.debug("nsIWebProgressListener: onLocationChange: " + details.url + " (" + details.flags + ")");        
-
-        // LOCATION_CHANGE_SAME_DOCUMENT = "did not load a new document"
-        if ( details.flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT ) {
-            vAPI.tabs.onUpdated(tabId, {url: details.url}, {
-                frameId: 0,
-                tabId: tabId,
-                url: browser.currentURI.asciiSpec
-            });
-            return;
-        }
-
-        // https://github.com/gorhill/uBlock/issues/105
-        // Allow any kind of pages
-        vAPI.tabs.onNavigation({
-            frameId: 0,
-            tabId: tabId,
-            url: details.url,
-        });
-    }
-
-    vAPI.messaging.globalMessageManager.addMessageListener(
-        locationChangedListenerMessageName,
-        locationChangedListener
-    );
-
     httpObserver.register();
 
     cleanupTasks.push(function() {
@@ -1364,11 +1405,6 @@ vAPI.net.registerListeners = function() {
             shouldLoadListener
         );
 
-        vAPI.messaging.globalMessageManager.removeMessageListener(
-            locationChangedListenerMessageName,
-            locationChangedListener
-        );
-
         httpObserver.unregister();
     });
 };