diff --git a/firefox_esr.be0 b/firefox_esr.be0
index 405e080f0..5ac301ee2 100755
--- a/firefox_esr.be0
+++ b/firefox_esr.be0
@@ -1,74 +1,64 @@
 #!/bin/env beesh
 
-# BEE_VERSION firefox_esr-91.1.0-0
+# BEE_VERSION firefox_esr-78.9.0-2
 
-# https://www.linuxfromscratch.org/blfs/view/svn/xsoft/firefox.html
+#export BEE_TMP_TMPDIR=/dev/shm BEE_TMP_BUILDROOT=/dev/shm/bee-root BEE_MAKEFLAGS='-j80'
 
 #SRCURL[0]="https://ftp.mozilla.org/pub/firefox/releases/${PKGVERSION}${PKGEXTRANAME}/source/firefox-${PKGVERSION}${PKGEXTRANAME}.source.tar.xz"
-SRCURL[0]="https://beehive.molgen.mpg.de/61350e551a90d199ca4a1f93e69092ee/firefox-91.1.0esr.source.tar.xz"
 
-# PATCHURL+=('https://www.linuxfromscratch.org/patches/blfs/svn/firefox-91.1.0esr-disable_rust_test-1.patch')
-PATCHURL+=("https://beehive.molgen.mpg.de/5a35bd2578dc20e1d9b9152a96c5ef1c/firefox-91.1.0esr-disable_rust_test-1.patch")
+SRCURL[0]="https://beehive.molgen.mpg.de/10529ea05d2a1b46eb239330a3ae5471/firefox-78.9.0esr.source.tar.xz"
 
 mee_configure() {
 
-
-    . /pkg/node-14.17.1-0/profile
-    . /pkg/rustc-1.52.1-0/profile
-
-    cat > ${S}/mozconfig <<EOF
-ac_add_options --prefix=/usr/local
-ac_add_options --enable-application=browser
-ac_add_options --disable-necko-wifi
-ac_add_options --enable-official-branding
-ac_add_options --enable-system-pixman
-ac_add_options --without-system-icu
-ac_add_options --without-system-nspr
-ac_add_options --disable-tests
-ac_add_options --enable-optimize
-ac_add_options --disable-crashreporter
-ac_add_options --disable-updater
-mk_add_options MOZ_MAKE_FLAGS="${BEE_MAKEFLAGS}"
-mk_add_options MOZ_OBJDIR=$B
-unset MOZ_TELEMETRY_REPORTING
-EOF
-#        ac_add_options --disable-elf-hack
-  export MOZBUILD_STATE_PATH=${B}/mozbuild
-  export CARGO_HOME=$B/.cargo
-  export MACH_USE_SYSTEM_PYTHON=1
+    . /usr/local/package/lib/node.profile
+    . /pkg/rustc-1.50.0-0/profile
+
+    cat > ${S}/mozconfig <<-EOF
+        ac_add_options --enable-application=browser
+        ac_add_options --disable-necko-wifi
+        ac_add_options --enable-official-branding
+        ac_add_options --without-system-icu
+        ac_add_options --without-system-nspr
+        ac_add_options --disable-elf-hack
+        ac_add_options --disable-updater
+        ac_add_options --disable-crashreporter
+        ac_add_options --disable-tests
+        ac_add_options --enable-optimize
+        mk_add_options MOZ_MAKE_FLAGS="${BEE_MAKEFLAGS}"
+        mk_add_options MOZ_OBJDIR=$B
+        unset MOZ_TELEMETRY_REPORTING
+	EOF
   ${S}/mach configure
 }
 
 mee_build() {
-  export MOZBUILD_STATE_PATH=${B}/mozbuild
   export CARGO_HOME=$B/.cargo
-  export MACH_USE_SYSTEM_PYTHON=1
-  sh -vx ${S}/mach build --verbose
+  export CC=gcc CXX=g++
+  export MOZBUILD_STATE_PATH=${B}/mozbuild
+  ${S}/mach build
 }
 
 mee_build_post() {
 
     # create menu entry
 
-    cat >${B}/firefoxesr.desktop <<EOF
-[Desktop Entry]
-Version=1.0
-Name=Firefox-ESR-${PKGVERSION[1]}
-GenericName=Web Browser
-Comment=Surf the World Wide Web
-Exec=firefoxesr${PKGVERSION[1]} -ProfileManager %u
-Icon=firefox
-Terminal=false
-Type=Application
-StartupNotify=true
-Categories=Network;WebBrowser;
-EOF
+    cat >${B}/firefoxesr.desktop <<-EOF
+	[Desktop Entry]
+	Version=1.0
+	Name=Firefox-ESR-${PKGVERSION[1]}
+	GenericName=Web Browser
+	Comment=Surf the World Wide Web
+	Exec=firefoxesr${PKGVERSION[1]} -ProfileManager %u
+	Icon=firefox
+	Terminal=false
+	Type=Application
+	StartupNotify=true
+	Categories=Network;WebBrowser;
+	EOF
 }
 
 mee_install() {
-      MACH_USE_SYSTEM_PYTHON=1 \
-      DESTDIR=$D \
-      ${S}/mach install
+    DESTDIR=$D ${S}/mach install
 }
 
 mee_install_post() {
@@ -274,5 +264,12 @@ defaultPref("extensions.legacy.enabled",true);
 
 //disable firefox refresh request
 defaultPref("browser.disableResetPrompt",true);
+
+//disable firefox hardware acceleration
+defaultPref("layers.acceleration.disabled",true);
+
+//enable gfx, boost for X11 forwarding
+defaultPref("gfx.xrender.enabled",true);
+
 EOF
 }