diff --git a/.firefox.metadata b/.firefox.metadata
index 1ff8a8b..6889574 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,6 +1,6 @@
 511960dd78451a06c9df76509635aeec05b2051a SOURCES/Python-2.7.8.tgz
 467bdb846d67c01aed9e521fe0ef280065a50c3c SOURCES/devtoolset-2-binutils-2.23.52.0.1-10.el5.src.rpm
-5703a40f6ed5482f9b2d8da9cbe967f9779cc036 SOURCES/firefox-45.1.1esr.source.tar.xz
-fea9c4466da30aba9abd92e431ce44b0ca1f35d6 SOURCES/firefox-langpacks-45.1.1esr-20160504.tar.xz
+f3b082c51afb45922b820c2bc01aab01758f0fa8 SOURCES/firefox-45.2.0esr.source.tar.xz
+b3941d750f3c3fde34a500dd378c417b117be633 SOURCES/firefox-langpacks-45.2.0esr-20160603.tar.xz
 e5ba84786af5d0e0e23b1a9112c76821ef23306c SOURCES/gcc48-4.8.2-16.el5.src.rpm
 77fd30f7ebc12a629a31c1e252cec06af55a71fe SOURCES/yasm-1.2.0-3.el5.src.rpm
diff --git a/.gitignore b/.gitignore
index 51f973d..62b0e7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 SOURCES/Python-2.7.8.tgz
 SOURCES/devtoolset-2-binutils-2.23.52.0.1-10.el5.src.rpm
-SOURCES/firefox-45.1.1esr.source.tar.xz
-SOURCES/firefox-langpacks-45.1.1esr-20160504.tar.xz
+SOURCES/firefox-45.2.0esr.source.tar.xz
+SOURCES/firefox-langpacks-45.2.0esr-20160603.tar.xz
 SOURCES/gcc48-4.8.2-16.el5.src.rpm
 SOURCES/yasm-1.2.0-3.el5.src.rpm
diff --git a/SOURCES/firefox-centos-default-bookmarks.html b/SOURCES/firefox-centos-default-bookmarks.html
deleted file mode 100644
index 95a34bd..0000000
--- a/SOURCES/firefox-centos-default-bookmarks.html
+++ /dev/null
@@ -1,21 +0,0 @@
-<!DOCTYPE NETSCAPE-Bookmark-file-1>
-<!-- This is an automatically generated file.
-It will be read and overwritten.
-Do Not Edit! -->
-<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
-<TITLE>Bookmarks</TITLE>
-<H1>Bookmarks</H1>
-
-<DL><p>
-    <DT><H3 ADD_DATE="961112773" LAST_MODIFIED="994788142" PERSONAL_TOOLBAR_FOLDER="true" ID="NC:PersonalToolbarFolder">Personal Toolbar Folder</H3>
-    <DL><p>
-        <DT><A HREF="http://www.centos.org/" ADD_DATE="994787542" LAST_VISIT="994788277" LAST_CHARSET="ISO-8859-1">CentOS</A>
-        <DT><H3 ADD_DATE="994787811" LAST_MODIFIED="994788115" ID="NC:BookmarksRoot#$7957b8a">Support</H3>
-        <DL><p>
-            <DT><A HREF="http://www.centos.org/modules/newbb/" ADD_DATE="994787936">CentOS Forums</A>
-            <DT><A HREF="http://www.centos.org/modules/tinycontent/index.php?id=16" ADD_DATE="994787936">CentOS Mailing-Lists</A>
-            <DT><A HREF="http://www.centos.org/docs/" ADD_DATE="994787827" LAST_VISIT="994788333" LAST_CHARSET="ISO-8859-1">CentOS Documentation</A>
-            <DT><A HREF="http://wiki.centos.org/" ADD_DATE="994787827" LAST_VISIT="994788333" LAST_CHARSET="ISO-8859-1">CentOS Wiki</A>
-        </DL><p>
-    </DL><p>
-</DL><p>
diff --git a/SOURCES/firefox-centos-default-prefs.js b/SOURCES/firefox-centos-default-prefs.js
deleted file mode 100644
index 58d1f61..0000000
--- a/SOURCES/firefox-centos-default-prefs.js
+++ /dev/null
@@ -1,27 +0,0 @@
-pref("app.update.auto",                     false);
-pref("app.update.enabled",                  false);
-pref("app.update.autoInstallEnabled",       false);
-pref("browser.backspace_action",            2);
-pref("browser.display.use_system_colors",   true);
-pref("browser.download.folderList",         1);
-pref("browser.link.open_external",          3);
-pref("browser.shell.checkDefaultBrowser",   false);
-pref("general.smoothScroll",                true);
-pref("general.useragent.vendor",            "CentOS");
-pref("general.useragent.vendorSub",         "FIREFOX_RPM_VR");
-pref("intl.locale.matchOS",                 true);
-pref("storage.nfs_filesystem",              false);
-pref("dom.ipc.plugins.enabled.nswrapper*",  false);
-pref("network.manage-offline-status",       true);
-pref("toolkit.networkmanager.disable",      false);
-pref("browser.startup.homepage",            "data:text/plain,browser.startup.homepage=file:///usr/share/doc/HTML/index.html");
-pref("toolkit.storage.synchronous",         0);
-pref("startup.homepage_override_url",       "http://www.centos.org/");
-pref("startup.homepage_welcome_url",        "http://www.centos.org/");
-pref("extensions.shownSelectionUI",         true);
-/* Workaround for rhbz#1110291 */
-pref("network.negotiate-auth.allow-insecure-ntlm-v1", true);
-/* Workaround for mozbz#1063315 */
-pref("security.use_mozillapkix_verification", false);
-pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
-pref("browser.tabs.remote.autostart",       false);
diff --git a/SOURCES/mozilla-1270046.patch b/SOURCES/mozilla-1270046.patch
new file mode 100644
index 0000000..16c6b45
--- /dev/null
+++ b/SOURCES/mozilla-1270046.patch
@@ -0,0 +1,12 @@
+--- firefox-46.0.1/extensions/auth/nsAuthSambaNTLM.cpp.rhbz-1173156	2016-05-03 06:31:11.000000000 +0100
++++ firefox-46.0.1/extensions/auth/nsAuthSambaNTLM.cpp	2016-05-04 10:18:53.157429123 +0100
+@@ -256,7 +256,8 @@ nsAuthSambaNTLM::GetNextToken(const void
+     nsCString line;
+     if (!ReadLine(mFromChildFD, line))
+         return NS_ERROR_FAILURE;
+-    if (!StringBeginsWith(line, NS_LITERAL_CSTRING("KK "))) {
++    if (!StringBeginsWith(line, NS_LITERAL_CSTRING("KK ")) &&
++        !StringBeginsWith(line, NS_LITERAL_CSTRING("AF "))) {
+         // Something went wrong. Perhaps no credentials are accessible.
+         return NS_ERROR_FAILURE;
+     }
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 59b7df7..be27457 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -88,7 +88,7 @@ ExcludeArch: ppc ia64
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        45.1.1
+Version:        45.2.0
 Release:        1%{?dist}
 URL:            http://www.mozilla.org/projects/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -100,10 +100,10 @@ Group:          Applications/Internet
 # From ftp://archive.mozilla.org/pub/firefox/releases/%{version}%{?ext_version}/source
 Source0:        firefox-%{version}%{?ext_version}.source.tar.xz
 %if %{build_langpacks}
-Source1:        firefox-langpacks-%{version}%{?ext_version}-20160504.tar.xz
+Source1:        firefox-langpacks-%{version}%{?ext_version}-20160603.tar.xz
 %endif
 Source10:       firefox-mozconfig
-Source12:       firefox-centos-default-prefs.js
+Source12:       firefox-redhat-default-prefs.js
 Source20:       firefox.desktop
 Source500:      firefox.sh.in.rhel5
 Source600:      firefox.sh.in.rhel6
@@ -116,7 +116,7 @@ Source300:      gcc48-%{gcc_version}.el5.src.rpm
 Source301:      yasm-1.2.0-3.el5.src.rpm
 Source302:      devtoolset-2-binutils-2.23.52.0.1-10.el5.src.rpm
 # RHEL5 bookmarks
-Source501:       firefox-centos-default-bookmarks.html
+Source501:       firefox-redhat-default-bookmarks.html
 
 # Build patches
 Patch0:         firefox-install-dir.patch
@@ -139,6 +139,7 @@ Patch111:       rhbz-1173156.patch
 Patch201:       mozilla-1005535.patch
 # Kaie's patch, we'll most likely need this one
 Patch202:       mozilla-1152515.patch
+Patch203:       mozilla-1270046.patch
 
 # RHEL5 patches
 Patch500:       build-el5-build-id.patch
@@ -407,7 +408,7 @@ cd %{tarballdir}
 %patch201 -p1 -b .mozbz-1005535
 # FIXME: will require this?: by kai
 %patch202 -p1 -b .mozbz-1152515
-
+%patch203 -p1 -b .mozbz-1270046
 
 # RHEL5 only patches
 %if %{?rhel} == 5
@@ -940,8 +941,11 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
-* Tue May 12 2016 Johnny Hughes <johnny@centos.org> - 45.1.1-1
-- Manual Debranding after autodebrand failed.
+* Fri Jun  3 2016 Jan Horak <jhorak@redhat.com> - 45.2.0-1
+- Update to 45.2.0 ESR
+
+* Tue May 10 2016 Martin Stransky <stransky@redhat.com> - 45.1.1-2
+- Added fix for mozbz#1270046 - new Samba auth response
 
 * Wed May  4 2016 Jan Horak <jhorak@redhat.com> - 45.1.1-1
 - Update to 45.1.1 ESR