diff --git a/.abf.yml b/.abf.yml
index e1a6c94..ebb28b7 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,2 +1,2 @@
 sources:
- "firefox-10.0.10esr.source.tar.bz2" 286481a9adb46976cd186f9467f2c9bc207ac709
+  firefox-17.0esr.source.tar.bz2: d8d1d51b2d2accf3432fc23a77215274f12b7c70
diff --git a/firefox-disable-check-default-browser.patch b/firefox-disable-check-default-browser.patch
index f7dd659..208cc38 100644
--- a/firefox-disable-check-default-browser.patch
+++ b/firefox-disable-check-default-browser.patch
@@ -1,9 +1,9 @@
---- mozilla-esr10.orig/browser/app/profile/firefox.js	2012-08-25 01:00:04.000000000 +0400
-+++ mozilla-esr10/browser/app/profile/firefox.js	2012-09-08 01:18:46.807590868 +0400
-@@ -241,7 +241,7 @@
+--- mozilla-esr17/browser/app/profile/firefox.js.defaultbrowser	2012-11-22 21:44:58.000000000 +0400
++++ mozilla-esr17/browser/app/profile/firefox.js	2012-11-22 21:45:55.105352113 +0400
+@@ -240,7 +240,7 @@ pref("general.useragent.override.natwest
+ pref("general.useragent.override.raiffeisen.hu",         "Gecko/[^ ]*#Gecko/20100101"); // bug 795348
  
- // Whether or not the application should check at startup each time if it 
- // is the default browser.
+ // At startup, check if we're the default browser and prompt user if not.
 -pref("browser.shell.checkDefaultBrowser", true);
 +pref("browser.shell.checkDefaultBrowser", false);
  
diff --git a/firefox-lang.patch b/firefox-lang.patch
index 4e26586..e244d97 100644
--- a/firefox-lang.patch
+++ b/firefox-lang.patch
@@ -1,13 +1,12 @@
---- mozilla-beta/browser/app/profile/firefox.js.lang	2011-07-21 19:18:31.000000000 -0300
-+++ mozilla-beta/browser/app/profile/firefox.js	2011-07-30 20:57:54.707580609 -0300
-@@ -220,6 +220,10 @@ pref("keyword.URL", "");
+--- mozilla-esr17/browser/app/profile/firefox.js.lang	2012-11-19 19:41:56.000000000 +0400
++++ mozilla-esr17/browser/app/profile/firefox.js	2012-11-22 21:43:56.469434807 +0400
+@@ -215,6 +215,9 @@ pref("keyword.URL", "");
  pref("general.useragent.locale", "@AB_CD@");
  pref("general.skins.selectedSkin", "classic/1.0");
  
 +// Use LANG environment variable to choose locale
 +pref("intl.locale.matchOS", true);
 +
-+
- pref("general.smoothScroll", false);
+ pref("general.smoothScroll", true);
  #ifdef UNIX_BUT_NOT_MAC
  pref("general.autoScroll", false);
diff --git a/firefox.spec b/firefox.spec
index 72eb001..26a6eef 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -1,10 +1,10 @@
-%define major 10
-%define realver %{major}.0.10
+%define major 17
+%define realver %{major}.0
 
 # (tpg) MOZILLA_FIVE_HOME
 %define mozillalibdir %{_libdir}/%{name}-%{realver}
 %define pluginsdir %{_libdir}/mozilla/plugins
-%define firefox_channel esr10
+%define firefox_channel esr17
 
 %define release 1