diff --git a/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch b/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch
new file mode 100644
index 0000000..6dfe2ad
--- /dev/null
+++ b/SOURCES/Bug-1238661---fix-mozillaSignalTrampoline-to-work-.patch
@@ -0,0 +1,12 @@
+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
new file mode 100644
index 0000000..3f84f95
--- /dev/null
+++ b/SOURCES/Bug-1526653---fix_user_vfp_armv7.patch
@@ -0,0 +1,35 @@
+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
new file mode 100644
index 0000000..ea10021
--- /dev/null
+++ b/SOURCES/firefox-centos-default-prefs.js
@@ -0,0 +1,35 @@
+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/SPECS/firefox.spec b/SPECS/firefox.spec
index 1259e5f..7bbbe46 100644
--- a/SPECS/firefox.spec
+++ b/SPECS/firefox.spec
@@ -1,6 +1,12 @@
 # Set for local builds only
 %global disable_toolsets  0
 
+%ifarch %{arm}
+%if %{defined el8}
+%undefine _debugsource_packages
+%endif
+%endif
+
 %ifarch i686
 # no debug package for the i686 because oom on i686 with debuginfos
 %global debug_package %{nil}
@@ -706,8 +712,12 @@ echo "ac_add_options --disable-optimize" >> .mozconfig
 %endif
 %ifarch armv7hl
 # ARMv7 need that (rhbz#1426850)
+%if %{defined el8}
+%global optimize_flags "-g0 -O2 -fno-schedule-insns -fno-lto"
+%else
 %global optimize_flags "-g -O2 -fno-schedule-insns"
 %endif
+%endif
 %ifarch ppc64le aarch64
 %global optimize_flags "-g -O2"
 %endif
@@ -1089,6 +1099,13 @@ MOZ_OPT_FLAGS=$(echo "$MOZ_OPT_FLAGS" | %{__sed} -e 's/-g/-g1/')
 export MOZ_DEBUG_FLAGS=" "
 %endif
 
+%ifarch %{arm}
+%if %{defined el8}
+MOZ_OPT_FLAGS=$(echo "$MOZ_OPT_FLAGS" | %{__sed} -e 's/-g/-g0/')
+export MOZ_DEBUG_FLAGS=" "
+%endif
+%endif
+
 # We don't wantfirefox to use CK_GCM_PARAMS_V3 in nss
 MOZ_OPT_FLAGS="$MOZ_OPT_FLAGS -DNSS_PKCS11_3_0_STRICT"