diff --git a/README.md b/README.md
index d654d91..9dac325 100644
--- a/README.md
+++ b/README.md
@@ -3,32 +3,28 @@
 
 To get started with building LineageOS GSI, you'll need to get familiar with [Git and Repo](https://source.android.com/source/using-repo.html), and set up your environment by referring to [LineageOS Wiki](https://wiki.lineageos.org/devices/redfin/build) (mainly "Install the build packages") and [How to build a GSI](https://github.com/phhusson/treble_experimentations/wiki/How-to-build-a-GSI%3F).
 
-First, open a new Terminal window, which defaults to your home directory.  Clone the modified treble_experimentations repo there:
+First, open a new Terminal window, which defaults to your home directory. Create a new working directory for your LineageOS build and navigate to it:
 
-    git clone https://github.com/AndyCGYan/treble_experimentations
-
-Create a new working directory for your LineageOS build and navigate to it:
-
-    mkdir lineage-18.x-build-gsi; cd lineage-18.x-build-gsi
+    mkdir lineage-19.x-build-gsi; cd lineage-19.x-build-gsi
 
 Initialize your LineageOS workspace:
 
-    repo init -u https://github.com/LineageOS/android.git -b lineage-18.1
+    repo init -u https://github.com/LineageOS/android.git -b lineage-19.1
 
 Clone both this and the patches repos:
 
-    git clone https://github.com/AndyCGYan/lineage_build_unified lineage_build_unified -b lineage-18.1
-    git clone https://github.com/AndyCGYan/lineage_patches_unified lineage_patches_unified -b lineage-18.1
+    git clone https://github.com/AndyCGYan/lineage_build_unified lineage_build_unified -b lineage-19.1
+    git clone https://github.com/AndyCGYan/lineage_patches_unified lineage_patches_unified -b lineage-19.1
 
 Finally, start the build script - for example, to build for all supported archs:
 
-    bash lineage_build_unified/buildbot_unified.sh treble 32B A64B 64B
+    bash lineage_build_unified/buildbot_unified.sh treble A64B A64BG 64B 64BG
 
 Be sure to update the cloned repos from time to time!
 
 ---
 
-Note: A-only and VNDKLite targets are generated from AB images instead of source-built - refer to [sas-creator](https://github.com/AndyCGYan/sas-creator).
+Note: VNDKLite and Secure targets are generated from built images instead of source-built - refer to [sas-creator](https://github.com/AndyCGYan/sas-creator).
 
 ---
 
diff --git a/apply_patches.sh b/apply_patches.sh
new file mode 100644
index 0000000..8cd1d20
--- /dev/null
+++ b/apply_patches.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -e
+
+patches="$(readlink -f -- $1)"
+
+shopt -s nullglob
+for project in $(cd $patches; echo *);do
+	p="$(tr _ / <<<$project |sed -e 's;platform/;;g')"
+	[ "$p" == build ] && p=build/make
+	[ "$p" == vendor/partner/gms ] && p=vendor/partner_gms
+	pushd $p
+	git clean -fdx; git reset --hard
+	for patch in $patches/$project/*.patch;do
+		if git apply --check $patch;then
+			git am $patch
+		elif patch -f -p1 --dry-run < $patch > /dev/null;then
+			#This will fail
+			git am $patch || true
+			patch -f -p1 < $patch
+			git add -u
+			git am --continue
+		else
+			echo "Failed applying $patch"
+			exit 1
+		fi
+	done
+	popd
+done
+
diff --git a/buildbot_unified.sh b/buildbot_unified.sh
index 09805c9..7434cab 100755
--- a/buildbot_unified.sh
+++ b/buildbot_unified.sh
@@ -46,8 +46,6 @@ echo\
 
 START=`date +%s`
 BUILD_DATE="$(date +%Y%m%d)"
-WITHOUT_CHECK_API=true
-WITH_SU=true
 
 prep_build() {
     echo "Preparing local manifests"
@@ -64,21 +62,9 @@ prep_build() {
     mkdir -p ~/build-output
     echo ""
 
-    repopick -t twelve-monet
-    repopick -Q "status:open+project:LineageOS/android_packages_apps_AudioFX+branch:lineage-19.0"
-    repopick -Q "status:open+project:LineageOS/android_packages_apps_Etar+branch:lineage-19.0"
-    repopick -Q "status:open+project:LineageOS/android_packages_apps_Trebuchet+branch:lineage-19.0+NOT+317783+NOT+318747"
+    repopick -Q "status:open+project:LineageOS/android_packages_apps_Trebuchet+branch:lineage-19.1"
     repopick -t twelve-burnin
-    repopick -t twelve-buttons
     repopick -t twelve-fingerprint
-    repopick -t twelve-volume-panel-location
-    repopick -t twelve-swap-volume-buttons
-    repopick -t twelve-camera-button
-    repopick -t twelve-navbar-runtime-toggle
-    repopick -t twelve-buttons-lights
-    repopick -t twelve-keyboard-lights
-    repopick -t twelve-statusbar-brightness-and-qs-slider
-    repopick -t twelve-powermenu
     repopick 321337 # Deprioritize important developer notifications
     repopick 321338 # Allow disabling important developer notifications
     repopick 321339 # Allow disabling USB notifications
@@ -86,7 +72,7 @@ prep_build() {
 
 apply_patches() {
     echo "Applying patch group ${1}"
-    bash ~/treble_experimentations/apply-patches.sh ./lineage_patches_unified/${1}
+    bash ./lineage_build_unified/apply_patches.sh ./lineage_patches_unified/${1}
 }
 
 prep_device() {
@@ -115,25 +101,25 @@ build_device() {
     then
         lunch lineage_arm64-userdebug
         make -j$(nproc --all) systemimage
-        mv $OUT/system.img ~/build-output/lineage-19.0-$BUILD_DATE-UNOFFICIAL-arm64$(${PERSONAL} && echo "-personal" || echo "").img
+        mv $OUT/system.img ~/build-output/lineage-19.1-$BUILD_DATE-UNOFFICIAL-arm64$(${PERSONAL} && echo "-personal" || echo "").img
     else
         brunch ${1}
-        mv $OUT/lineage-*.zip ~/build-output/lineage-19.0-$BUILD_DATE-UNOFFICIAL-${1}$($PERSONAL && echo "-personal" || echo "").zip
+        mv $OUT/lineage-*.zip ~/build-output/lineage-19.1-$BUILD_DATE-UNOFFICIAL-${1}$($PERSONAL && echo "-personal" || echo "").zip
     fi
 }
 
 build_treble() {
     case "${1}" in
-        ("A64B") TARGET=treble_a64_bvS;;
-        ("A64BG") TARGET=treble_a64_bgS;;
-        ("64B") TARGET=treble_arm64_bvS;;
-        ("64BG") TARGET=treble_arm64_bgS;;
+        ("A64B") TARGET=a64_bvS;;
+        ("A64BG") TARGET=a64_bgS;;
+        ("64B") TARGET=arm64_bvS;;
+        ("64BG") TARGET=arm64_bgS;;
         (*) echo "Invalid target - exiting"; exit 1;;
     esac
     lunch lineage_${TARGET}-userdebug
     make installclean
     make -j$(nproc --all) systemimage
-    mv $OUT/system.img ~/build-output/lineage-19.0-$BUILD_DATE-UNOFFICIAL-${TARGET}$(${PERSONAL} && echo "-personal" || echo "").img
+    mv $OUT/system.img ~/build-output/lineage-19.1-$BUILD_DATE-UNOFFICIAL-${TARGET}$(${PERSONAL} && echo "-personal" || echo "").img
     make vndk-test-sepolicy
 }
 
@@ -170,6 +156,11 @@ do
     build_${MODE} ${var}
 done
 ls ~/build-output | grep 'lineage' || true
+if [ ${MODE} == "treble" ]
+then
+    echo "OTA timestamp: $START"
+    echo ""
+fi
 
 END=`date +%s`
 ELAPSEDM=$(($(($END-$START))/60))