diff --git a/app/src/main/assets/bin/arm/zstdcat b/app/src/main/assets/bin/arm/zstdcat
new file mode 100755
index 00000000..98f7c592
Binary files /dev/null and b/app/src/main/assets/bin/arm/zstdcat differ
diff --git a/app/src/main/assets/bin/arm_64/zstdcat b/app/src/main/assets/bin/arm_64/zstdcat
new file mode 100755
index 00000000..af17a14d
Binary files /dev/null and b/app/src/main/assets/bin/arm_64/zstdcat differ
diff --git a/app/src/main/assets/bin/x86/zstdcat b/app/src/main/assets/bin/x86/zstdcat
new file mode 100755
index 00000000..544244d8
Binary files /dev/null and b/app/src/main/assets/bin/x86/zstdcat differ
diff --git a/app/src/main/assets/bin/x86_64/zstdcat b/app/src/main/assets/bin/x86_64/zstdcat
new file mode 100755
index 00000000..6fc06694
Binary files /dev/null and b/app/src/main/assets/bin/x86_64/zstdcat differ
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index 119b76dc..bb6258ec 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -303,7 +303,9 @@
         <item>precise</item>
         <item>trusty</item>
         <item>xenial</item>
-        <item>bionic</item>
+	<item>bionic</item>
+	<item>focal</item>
+	<item>jammy</item>
     </string-array>
     <string-array name="ubuntu_arch_values" translatable="false">
         <item>armel</item> <!-- precise only -->
diff --git a/app/src/main/res/values/preferences.xml b/app/src/main/res/values/preferences.xml
index 7a8778fa..90d47290 100644
--- a/app/src/main/res/values/preferences.xml
+++ b/app/src/main/res/values/preferences.xml
@@ -101,7 +101,7 @@
     <string name="x86_64_debian_arch" translatable="false">amd64</string>
 
     <!-- Ubuntu -->
-    <string name="ubuntu_suite" translatable="false">bionic</string>
+    <string name="ubuntu_suite" translatable="false">jammy</string>
     <!-- arm -->
     <string name="arm_ubuntu_source_path" translatable="false">http://ports.ubuntu.com/</string>
     <string name="arm_ubuntu_arch" translatable="false">armhf</string>
diff --git a/contrib/README.md b/contrib/README.md
index f90e384c..35429aa3 100644
--- a/contrib/README.md
+++ b/contrib/README.md
@@ -13,3 +13,4 @@ QEMU: https://packages.debian.org/stretch/qemu-user-static
 
 mke2fs (e2fsprogs): http://packages.debian.org/wheezy/e2fsprogs
 
+zstdcat (zstd): https://github.com/facebook/zstd
diff --git a/contrib/zstdcat/README.md b/contrib/zstdcat/README.md
new file mode 100644
index 00000000..7969d28b
--- /dev/null
+++ b/contrib/zstdcat/README.md
@@ -0,0 +1,84 @@
+zstdcat Build Guide
+===================
+
+Zstandard file compression utility. This is required for newer version of Ubuntu, and not included before Android 12.
+
+## Build instructions
+
+In a work directory of your choice...
+
+### Download/Install Android SDK:
+
+```
+$ mkdir sdk/
+$ cd sdk/
+$ mkdir cmdline-tools/
+$ cd cmdline-tools/
+```
+
+Go to https://developer.android.com/studio/
+Download after agreeing to EULA: `commandlinetools-linux-xxx_latest.zip` into above path.
+(In my case it was `commandlinetools-linux-8512546_latest.zip`.)
+
+```
+$ unzip commandlinetools-linux-8512546_latest.zip
+```
+
+Now install CMake and the NDK, I used the version below:
+
+```
+$ cmdline-tools/bin/sdkmanager --install "cmake;3.10.2.4988404"
+$ cmdline-tools/bin/sdkmanager --install "ndk;24.0.8215888"
+$ cd ../..
+```
+
+### Clone and build zstdcat
+
+Preparation:
+
+```
+$ git clone https://github.com/facebook/zstd.git
+$ cd zstd/build/cmake/
+$ mkdir builddir/
+$ cd builddir/
+$ export ANDROID_SDK=../../../../sdk
+```
+
+#### Build for armeabi
+
+```
+$ $ANDROID_SDK/cmake/3.10.2.4988404/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_SDK/ndk/24.0.8215888/build/cmake/android.toolchain.cmake -DANDROID_ABI=armeabi-v7a ..
+$ make -j 8
+```
+
+Copy out (and rename) from zstd ``programs/zstd`` to linuxdeploy as ``app/src/main/assets/bin/arm/zstdcat``
+
+#### Build for arm64-v8a
+
+```
+$ rm -rf *
+$ $ANDROID_SDK/cmake/3.10.2.4988404/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_SDK/ndk/24.0.8215888/build/cmake/android.toolchain.cmake -DANDROID_ABI=arm64-v8a ..
+$ make -j 8
+```
+
+Copy out (and rename) from zstd ``programs/zstd`` to linuxdeploy as ``app/src/main/assets/bin/arm_64/zstdcat``
+
+#### Build for x86
+
+```
+$ rm -rf *
+$ $ANDROID_SDK/cmake/3.10.2.4988404/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_SDK/ndk/24.0.8215888/build/cmake/android.toolchain.cmake -DANDROID_ABI=x86 ..
+$ make -j 8
+```
+
+Copy out (and rename) from zstd ``programs/zstd`` to linuxdeploy as ``app/src/main/assets/bin/x86/zstdcat``
+
+#### Build for x86_64
+
+```
+$ rm -rf *
+$ $ANDROID_SDK/cmake/3.10.2.4988404/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_SDK/ndk/24.0.8215888/build/cmake/android.toolchain.cmake -DANDROID_ABI=x86_64 ..
+$ make -j 8
+```
+
+Copy out (and rename) from zstd ``programs/zstd`` to linuxdeploy as ``app/src/main/assets/bin/x86_64/zstdcat``