diff --git a/android/darwin-build-arm64-qt515.sh b/android/darwin-build-arm64-qt515.sh
deleted file mode 100755
index ade5b89b..00000000
--- a/android/darwin-build-arm64-qt515.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-BUILD_DIR=build-arm64-nougat
-rm -rf $BUILD_DIR/*
-mkdir -p $BUILD_DIR
-
-export PLATFORM_LEVEL=29
-export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/
-export ANDROID_SDK=/Users/Shared/Android/Sdk
-export ANDROID_NDK=/Users/Shared/Android/Sdk/ndk/21.4.7075529
-export ANDROID_NATIVE_API_LEVEL=24
-export ANDROID_SDK_MINVER=24
-export ANDROID_SDK_TARGET=26
-export QT_DIR=/Users/Shared/Qt/5.15.2/android
-
-cmake .. -B $BUILD_DIR -DCMAKE_SYSTEM_NAME=Android \
--DCMAKE_PREFIX_PATH=$QT_DIR \
--DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake \
--DCMAKE_MAKE_PROGRAM=$ANDROID_NDK/prebuilt/darwin-x86_64/bin/make \
--DCMAKE_BUILD_TYPE=Release \
--DANDROID_ABI="arm64-v8a" \
--DANDROID_STL_PREFIX="llvm-libc++" \
--DANDROID_STL_SHARED_LIBRARIES="c++_shared" \
--DANDROID_SDK_MINVER=$ANDROID_SDK_MINVER \
--DANDROID_SDK_TARGET=$ANDROID_SDK_TARGET \
--DANDROID_NATIVE_API_LEVEL=$ANDROID_NATIVE_API_LEVEL \
--DQT_ANDROID_PLATFORM_LEVEL=$PLATFORM_LEVEL \
--DQT_ANDROID_TOOL_PREFIX="aarch64-linux-android" \
--DQT_ANDROID_SDK_ROOT=$ANDROID_SDK \
--DQT_ANDROID_NDK_ROOT=$ANDROID_NDK \
--DQT_ANDROID_QT_ROOT=$QT_DIR \
--DQT_ANDROID_SDK_BUILDTOOLS_REVISION="28.0.3" \
--DQt5_DIR=$QT_DIR/lib/cmake/Qt5 \
--DQt5Core_DIR=$QT_DIR/lib/cmake/Qt5Core \
--DQt5Gui_DIR=$QT_DIR/lib/cmake/Qt5Gui \
--DQt5Qml_DIR=$QT_DIR/lib/cmake/Qt5Qml \
--DQt5Network_DIR=$QT_DIR/lib/cmake/Qt5Network \
--DQt5Quick_DIR=$QT_DIR/lib/cmake/Qt5Quick \
--DQt5QuickControls2_DIR=$QT_DIR/lib/cmake/Qt5QuickControls2 \
--DQt5Xml_DIR=$QT_DIR/lib/cmake/Qt5Xml \
--DQt5Svg_DIR=$QT_DIR/lib/cmake/Qt5Svg \
--DQt5Widgets_DIR=$QT_DIR/lib/cmake/Qt5Widgets \
--DQt5QmlModels_DIR=$QT_DIR/lib/cmake/Qt5QmlModels \
-$@
-
-[ $? -eq 0 ] && cmake --build $BUILD_DIR --parallel 4
-
diff --git a/android/linux-build-arm64-qt515.sh b/android/linux-build-arm64-qt515.sh
index 6df2992e..398bf2a8 100755
--- a/android/linux-build-arm64-qt515.sh
+++ b/android/linux-build-arm64-qt515.sh
@@ -2,10 +2,10 @@ BUILD_DIR=build-x64
 rm -rf $BUILD_DIR/*
 mkdir -p $BUILD_DIR
 
-export JAVA_HOME=$HOME/bin/java/jdk-17.0.12
+export JAVA_HOME=$HOME/bin/java/jdk1.8.0
 export ANDROID_SDK_ROOT=$HOME/bin/android/sdk
 export ANDROID_NDK=$HOME/bin/android/sdk/ndk/22.1.7171670
-export QT_DIR=$HOME/bin/Qt/5.15.15/android
+export QT_DIR=$HOME/bin/Qt/5.15.2/android
 
 cmake .. -B $BUILD_DIR -DCMAKE_SYSTEM_NAME=Android \
 -DCMAKE_PREFIX_PATH=$QT_DIR \
diff --git a/android/linux-build-armv7-qt515.sh b/android/linux-build-armv7-qt515.sh
index cf7ac645..7bad2a50 100755
--- a/android/linux-build-armv7-qt515.sh
+++ b/android/linux-build-armv7-qt515.sh
@@ -2,10 +2,10 @@ BUILD_DIR=build-x64
 rm -rf $BUILD_DIR/*
 mkdir -p $BUILD_DIR
 
-export JAVA_HOME=$HOME/bin/java/jdk-17.0.12
+export JAVA_HOME=$HOME/bin/java/jdk1.8.0
 export ANDROID_SDK_ROOT=$HOME/bin/android/sdk
 export ANDROID_NDK=$HOME/bin/android/sdk/ndk/22.1.7171670
-export QT_DIR=$HOME/bin/Qt/5.15.15/android
+export QT_DIR=$HOME/bin/Qt/5.15.2/android
 
 cmake .. -B $BUILD_DIR -DCMAKE_SYSTEM_NAME=Android \
 -DCMAKE_PREFIX_PATH=$QT_DIR \
diff --git a/android/linux-build-x64-qt515.sh b/android/linux-build-x64-qt515.sh
index cf893c36..24a2d60c 100755
--- a/android/linux-build-x64-qt515.sh
+++ b/android/linux-build-x64-qt515.sh
@@ -2,10 +2,10 @@ BUILD_DIR=build-x64
 rm -rf $BUILD_DIR/*
 mkdir -p $BUILD_DIR
 
-export JAVA_HOME=$HOME/bin/java/jdk-17.0.12
+export JAVA_HOME=$HOME/bin/java/jdk1.8.0
 export ANDROID_SDK_ROOT=$HOME/bin/android/sdk
 export ANDROID_NDK=$HOME/bin/android/sdk/ndk/22.1.7171670
-export QT_DIR=$HOME/bin/Qt/5.15.15/android
+export QT_DIR=$HOME/bin/Qt/5.15.2/android
 
 cmake .. -B $BUILD_DIR -DCMAKE_SYSTEM_NAME=Android \
 -DCMAKE_PREFIX_PATH=$QT_DIR \
diff --git a/android/linux-build-x86-qt515.sh b/android/linux-build-x86-qt515.sh
index 7461ed40..655b514d 100755
--- a/android/linux-build-x86-qt515.sh
+++ b/android/linux-build-x86-qt515.sh
@@ -2,10 +2,10 @@ BUILD_DIR=build-x86
 rm -rf $BUILD_DIR/*
 mkdir -p $BUILD_DIR
 
-export JAVA_HOME=$HOME/bin/java/jdk-17.0.12
+export JAVA_HOME=$HOME/bin/java/jdk1.8.0
 export ANDROID_SDK_ROOT=$HOME/bin/android/sdk
 export ANDROID_NDK=$HOME/bin/android/sdk/ndk/22.1.7171670
-export QT_DIR=$HOME/bin/Qt/5.15.15/android
+export QT_DIR=$HOME/bin/Qt/5.15.2/android
 
 cmake .. -B $BUILD_DIR -DCMAKE_SYSTEM_NAME=Android \
 -DCMAKE_PREFIX_PATH=$QT_DIR \