diff --git a/doc/cn/DevelopmentPreparation.md b/doc/cn/DevelopmentPreparation.md
index b86e19d12789fddfd2336986615f1de6674d45db..dfa793e0d458c2bb5d066f2ca2d22b6a350e1fb3 100644
--- a/doc/cn/DevelopmentPreparation.md
+++ b/doc/cn/DevelopmentPreparation.md
@@ -119,8 +119,7 @@ AOSP下载地址：https://source.android.com/source/downloading/
 下载AOSP并编译完成。
 
 * 在openarkcompiler目录下新建链接`android/`，并链接到AOSP的根目录；
-* 将`openarkcompiler/android/out/target/product/generic_arm64/obj/JAVA_LIBRARIES/core-libart_intermediates/javalib.jar`拷贝到`openarkcompiler/libjava-core/libart.jar`
-* 将`openarkcompiler/android/out/target/product/generic_arm64/obj/JAVA_LIBRARIES/core-oj_intermediates/javalib.jar`拷贝到`openarkcompiler/libjava-core/oj.jar`
+* 将`openarkcompiler/android/out/target/product/generic_arm64/obj/JAVA_LIBRARIES/core-all_intermediates/javalib.jar`拷贝到`openarkcompiler/libjava-core`目录，并命名为`java-core.jar`，同时码云上也提供了编译好的libcore的jar文件，你可以下载直接使用，下载链接`https://gitee.com/xlnb/aosp_core_bin`；
 * 在openarkcompiler/tools下新建链接gcc，并链接到AOSP的`openarkcompiler/android/prebuilts/gcc`;
 * 在openarkcompiler/tools下新建链接clang-r353983c，并链接到AOSP的`openarkcompiler/android/prebuilts/clang/host/linux-x86/clang-r353983c`；
 * 修改`openarkcompiler/build/config.gni`和`openarkcompiler/build/core/maple_variables.mk`中`ANDROID_GCC_PATH`和`ANDROID_CLANG_PATH`两个变量，配置为上述gcc和clang-r353982c的所在路径，例如：
diff --git a/tools/setup_tools.sh b/tools/setup_tools.sh
index 43e6a0a78112067bc4029eebf0407f2e0d3e8078..8d6efbeb075d9aee442174c5de9a21750f130e68 100755
--- a/tools/setup_tools.sh
+++ b/tools/setup_tools.sh
@@ -84,18 +84,18 @@ if [ ! -d $ANDROID_DIR/out/target/product/generic_arm64/obj ]; then
   . ./build/envsetup.sh
   lunch 2
   make -j32
+  make core-all
   ln -s $ANDROID_SRCDIR $ANDROID_DIR
   echo Downloaded and built AOSP.
 fi
 
 # create java-core.jar
-if [ ! -f $MAPLE_ROOT/libjava-core/libart.jar ]; then
+if [ ! -f $MAPLE_ROOT/libjava-core/java-core.jar ]; then
   mkdir -p $MAPLE_ROOT/libjava-core
   JLIBDIR=$ANDROID_DIR/out/target/product/generic_arm64/obj/JAVA_LIBRARIES
-  cp -f $JLIBDIR/core-libart_intermediates/javalib.jar $MAPLE_ROOT/libjava-core/libart.jar
-  cp -f $JLIBDIR/core-oj_intermediates/javalib.jar $MAPLE_ROOT/libjava-core/oj.jar
+  cp -f $JLIBDIR/core-all_intermediates/javalib.jar $MAPLE_ROOT/libjava-core/java-core.jar
   cd $MAPLE_ROOT/libjava-core
-  $MAPLE_ROOT/build/d8 --min-api 39 --output . libart.jar oj.jar
+  $MAPLE_ROOT/build/d8 --min-api 39 --output . java-core.jar
   mv classes.dex libcore-all.dex
   echo Copied jar files.
 fi