diff --git a/.firefox.metadata b/.firefox.metadata
index 692c2d9..78e698d 100644
--- a/.firefox.metadata
+++ b/.firefox.metadata
@@ -1,7 +1,7 @@
 18a8f30a0356c751b8d0ea6f76e764cab13ee046 SOURCES/Python-2.7.13.tar.xz
 a9effcc06cf80eaa22f12c1f7d6aa4266a1c4966 SOURCES/cbindgen-vendor-0.14.3.tar.xz
-4dc4e41ae749e1d189ac8f45d0b804a18b8d38c3 SOURCES/firefox-78.6.0esr.source.tar.xz
-d45296cbd3128ebc9aaf3f91a8b1d4cd6051365a SOURCES/firefox-langpacks-78.6.0esr-20201210.tar.xz
+33d6e03d9d84cbeab92e38b4dfed5005eb4b36df SOURCES/firefox-78.6.1esr.source.tar.xz
+831eb36cdde5a5afdad3f3b82eb1bbe55f4c31c0 SOURCES/firefox-langpacks-78.6.1esr-20210106.tar.xz
 0de63f863b158454b9429234b52ed28a397ec45c SOURCES/gtk3-private-3.22.26-1.el6.src.rpm
 e188ab1a444697bc649e223c28389d82ca94c472 SOURCES/libffi-3.0.13-18.el7_3.src.rpm
 5715f987bc0024ce5d72993cb101b8268350033b SOURCES/nodejs-10.21.0-5.fc32.src.rpm
diff --git a/.gitignore b/.gitignore
index 297d297..ed66bbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 SOURCES/Python-2.7.13.tar.xz
 SOURCES/cbindgen-vendor-0.14.3.tar.xz
-SOURCES/firefox-78.6.0esr.source.tar.xz
-SOURCES/firefox-langpacks-78.6.0esr-20201210.tar.xz
+SOURCES/firefox-78.6.1esr.source.tar.xz
+SOURCES/firefox-langpacks-78.6.1esr-20210106.tar.xz
 SOURCES/gtk3-private-3.22.26-1.el6.src.rpm
 SOURCES/libffi-3.0.13-18.el7_3.src.rpm
 SOURCES/nodejs-10.21.0-5.fc32.src.rpm
diff --git a/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch b/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch
deleted file mode 100644
index 6dfe2ad..0000000
--- a/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -up firefox-60.0/mfbt/LinuxSignal.h.mozilla-1238661 firefox-60.0/mfbt/LinuxSignal.h
---- firefox-60.0/mfbt/LinuxSignal.h.mozilla-1238661	2018-04-27 08:55:38.848241768 +0200
-+++ firefox-60.0/mfbt/LinuxSignal.h	2018-04-27 09:06:47.946769859 +0200
-@@ -22,7 +22,7 @@ __attribute__((naked)) void SignalTrampo
-                                              void* aContext) {
-   asm volatile("nop; nop; nop; nop" : : : "memory");
- 
--  asm volatile("b %0" : : "X"(H) : "memory");
-+  asm volatile("bx %0" : : "r"(H), "l"(aSignal), "l"(aInfo), "l"(aContext) : "memory");
- }
- 
- #  define MOZ_SIGNAL_TRAMPOLINE(h) (mozilla::SignalTrampoline<h>)
diff --git a/SOURCES/Bug-1526653---fix_user_vfp_armv7.patch b/SOURCES/Bug-1526653---fix_user_vfp_armv7.patch
deleted file mode 100644
index 3f84f95..0000000
--- a/SOURCES/Bug-1526653---fix_user_vfp_armv7.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-From fd6847c9416f9eebde636e21d794d25d1be8791d Mon Sep 17 00:00:00 2001
-From: Mike Hommey <mh@glandium.org>
-Date: Sat, 1 Jun 2019 09:06:01 +0900
-Subject: [PATCH] Bug 1526653 - Include struct definitions for user_vfp and
- user_vfp_exc.
-
----
- js/src/wasm/WasmSignalHandlers.cpp | 11 ++++++++++-
- 1 file changed, 10 insertions(+), 1 deletion(-)
-
-diff --git a/js/src/wasm/WasmSignalHandlers.cpp b/js/src/wasm/WasmSignalHandlers.cpp
-index 636537f8478..383c380f04c 100644
---- a/js/src/wasm/WasmSignalHandlers.cpp
-+++ b/js/src/wasm/WasmSignalHandlers.cpp
-@@ -248,7 +248,16 @@ using mozilla::DebugOnly;
- #endif
- 
- #ifdef WASM_EMULATE_ARM_UNALIGNED_FP_ACCESS
--#  include <sys/user.h>
-+struct user_vfp {
-+  unsigned long long fpregs[32];
-+  unsigned long fpscr;
-+};
-+
-+struct user_vfp_exc {
-+  unsigned long fpexc;
-+  unsigned long fpinst;
-+  unsigned long fpinst2;
-+};
- #endif
- 
- #if defined(ANDROID)
--- 
-2.20.1
-
diff --git a/SOURCES/firefox-centos-default-prefs.js b/SOURCES/firefox-centos-default-prefs.js
deleted file mode 100644
index ea10021..0000000
--- a/SOURCES/firefox-centos-default-prefs.js
+++ /dev/null
@@ -1,35 +0,0 @@
-pref("app.update.auto",                     false);
-pref("app.update.enabled",                  false);
-pref("app.update.autoInstallEnabled",       false);
-pref("general.smoothScroll",                true);
-pref("intl.locale.matchOS",                 true);
-pref("toolkit.storage.synchronous",         0);
-pref("toolkit.networkmanager.disable",      false);
-pref("offline.autoDetect",                  true);
-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("network.manage-offline-status",       true);
-pref("extensions.shownSelectionUI",         true);
-pref("ui.SpellCheckerUnderlineStyle",       1);
-pref("startup.homepage_override_url",       "http://www.centos.org");
-pref("startup.homepage_welcome_url",        "http://www.centos.org");
-pref("browser.startup.homepage",            "data:text/plain,browser.startup.homepage=file:///usr/share/doc/HTML/index.html");
-pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
-pref("media.gmp-gmpopenh264.provider.enabled",false);
-pref("media.gmp-gmpopenh264.autoupdate",false);
-pref("media.gmp-gmpopenh264.enabled",false);
-pref("media.gmp-gmpopenh264.enabled",false);
-pref("plugins.notifyMissingFlash", false);
-/* See https://bugzilla.redhat.com/show_bug.cgi?id=1226489 */
-pref("browser.display.use_system_colors", false);
-pref("layers.use-image-offscreen-surfaces", false);
-/* Allow sending credetials to all https:// sites */
-pref("network.negotiate-auth.trusted-uris", "https://");
-pref("security.use_sqldb", false);
-/* Use OS settings for UI language */
-pref("intl.locale.requested", "");
-/* See https://bugzilla.redhat.com/show_bug.cgi?id=1672424 */
-pref("storage.nfs_filesystem", true);
diff --git a/SOURCES/firefox.sh.in b/SOURCES/firefox.sh.in
index 2c8ffc1..ecff558 100644
--- a/SOURCES/firefox.sh.in
+++ b/SOURCES/firefox.sh.in
@@ -39,12 +39,12 @@ cmdname=`basename $0`
 MOZ_ARCH=$(uname -m)
 case $MOZ_ARCH in
 	x86_64 | s390x | sparc64)
-		MOZ_LIB_DIR="/usr/lib64"
-		SECONDARY_LIB_DIR="/usr/lib"
+		MOZ_LIB_DIR="%PREFIX%/lib64"
+		SECONDARY_LIB_DIR="%PREFIX%/lib"
 		;;
 	* )
-		MOZ_LIB_DIR="/usr/lib"
-		SECONDARY_LIB_DIR="/usr/lib64"
+		MOZ_LIB_DIR="%PREFIX%/lib"
+		SECONDARY_LIB_DIR="%PREFIX%/lib64"
 		;;
 esac
 
@@ -98,7 +98,7 @@ export MOZ_PLUGIN_PATH
 ##
 ## Set MOZ_APP_LAUNCHER for gnome-session
 ##
-export MOZ_APP_LAUNCHER="/usr/bin/firefox"
+export MOZ_APP_LAUNCHER="%PREFIX%/bin/firefox"
 
 ##
 ## Set FONTCONFIG_PATH for Xft/fontconfig
@@ -157,7 +157,7 @@ MOZILLA_DOWN=0
 if ! [ $MOZ_DISABLE_LANGPACKS ] || [ $MOZ_DISABLE_LANGPACKS -eq 0 ]; then
     if [ -x $MOZ_DIST_BIN/$MOZ_FIREFOX_FILE ]; then
         # Is firefox running?
-        /usr/bin/pidof firefox > /dev/null 2>&1
+        pidof firefox > /dev/null 2>&1
         MOZILLA_DOWN=$?
     fi
 fi
diff --git a/SPECS/firefox.spec b/SPECS/firefox.spec
index 65be19a..a0ad95d 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -215,7 +215,7 @@
 
 Summary:        Mozilla Firefox Web browser
 Name:           firefox
-Version:        78.6.0
+Version:        78.6.1
 Release:        1%{?dist}
 URL:            https://www.mozilla.org/firefox/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
@@ -228,7 +228,7 @@ ExclusiveArch:  i686 x86_64 ppc64 s390x
 
 Source0:        https://hg.mozilla.org/releases/mozilla-release/archive/firefox-%{version}%{?pre_version}.source.tar.xz
 %if %{build_langpacks}
-Source1:        firefox-langpacks-%{version}%{?pre_version}-20201210.tar.xz
+Source1:        firefox-langpacks-%{version}%{?pre_version}-20210106.tar.xz
 %endif
 Source2:        cbindgen-vendor-0.14.3.tar.xz
 Source10:       firefox-mozconfig
@@ -1220,6 +1220,11 @@ fi
 # Usually the compiler processes can take 2 GB of memory at peaks
 TASK_SIZE=4000000
 MEM_CONSTRAINED_JOBS=$(( MEM_AVAILABLE / TASK_SIZE ))
+
+if [ $MEM_CONSTRAINED_JOBS -le 0 ]; then
+  MEM_CONSTRAINED_JOBS=1
+fi
+
 CPU_AVAILABLE=$(/usr/bin/getconf _NPROCESSORS_ONLN)
 # Pick the minimum from available CPUs or memory constrained number of jobs
 MOZ_SMP_FLAGS=-j$([ "$CPU_AVAILABLE" -le "$MEM_CONSTRAINED_JOBS" ] && echo "$CPU_AVAILABLE" || echo "$MEM_CONSTRAINED_JOBS")
@@ -1380,6 +1385,7 @@ desktop-file-install --dir %{buildroot}%{_datadir}/applications %{SOURCE20}
 # set up the firefox start script
 %{__rm} -rf %{buildroot}%{_bindir}/firefox
 %{__cat} %{SOURCE21} > %{buildroot}%{_bindir}/firefox
+sed -i -e 's|%PREFIX%|%{_prefix}|' %{buildroot}%{_bindir}/firefox
 %if 0%{?bundle_gtk3}
 sed -i -e 's|%RHEL_ENV_VARS%|export XDG_DATA_DIRS="$MOZ_LIB_DIR/firefox/bundled/share:/usr/share:$XDG_DATA_DIRS"\nexport FONTCONFIG_FILE="$MOZ_LIB_DIR/firefox/bundled/etc/fonts/fonts.conf"|' %{buildroot}%{_bindir}/firefox
 %else
@@ -1678,8 +1684,8 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #---------------------------------------------------------------------
 
 %changelog
-* Wed Dec 16 2020 CentOS Sources <bugs@centos.org> - 78.6.0-1.el8.centos
-- Apply debranding changes
+* Wed Jan  6 16:30:08 CET 2021 Eike Rathke <erack@redhat.com> - 78.6.1-1
+- Update to 78.6.1 build1
 
 * Thu Dec 10 2020 Jan Horak <jhorak@redhat.com> - 78.6.0-1
 - Update to 78.6.0 build1