diff --git a/README.md b/README.md
index a775caa..2769d1e 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Android Studio 3.0
 
 ### 支持设备
 
-大多数xposed环境的手机，暂不支持模拟器，（android8.0手机dump 64位应用会闪退，实际上已经dump成功）
+大多数xposed环境的手机，暂不支持模拟器
 
 ### 分支
 
diff --git a/app/src/main/cpp/util/deviceutils.cpp b/app/src/main/cpp/util/deviceutils.cpp
index 17499d7..7a9f7d2 100644
--- a/app/src/main/cpp/util/deviceutils.cpp
+++ b/app/src/main/cpp/util/deviceutils.cpp
@@ -74,13 +74,13 @@ static void *new_arm64_open_common(uint8_t *base, size_t size, void *location,
                                    void *error_meessage, void *verify_result) {
     if (size < DEX_MIN_LEN) {
         __android_log_print(ANDROID_LOG_ERROR, TAG, "size =%u", size);
-        return nullptr;
+    } else {
+        save_dex_file(base, size);
     }
-    save_dex_file(base, size);
     void *result = old_arm64_open_common(base, size, location, location_checksum,
-                                        oat_dex_file, verify, verify_checksum,
-                                        error_meessage,
-                                        verify_result);
+                                         oat_dex_file, verify, verify_checksum,
+                                         error_meessage,
+                                         verify_result);
     return result;
 }
 /////////////////////
@@ -89,21 +89,20 @@ static void *new_arm64_open_common(uint8_t *base, size_t size, void *location,
 
 /////////////////////
 static void *(*old_arm64_open_memory)(uint8_t *base,
-                                             size_t size, void *location,
-                                             uint32_t location_checksum,
-                                             void *mem_map,
-                                             void *oat_dex_file, void *error_msg);
+                                      size_t size, void *location,
+                                      uint32_t location_checksum,
+                                      void *mem_map,
+                                      void *oat_dex_file, void *error_msg);
 
 static void *
 (new_arm64_open_memory)(uint8_t *base, size_t size, void *location,
                         uint32_t location_checksum, void *mem_map,
                         void *oat_dex_file, void *error_msg) {
-    if (size < DEX_MIN_LEN) {
-        return nullptr;
+    if (size > DEX_MIN_LEN) {
+        save_dex_file(base, size);
     }
-    save_dex_file(base, size);
     return (*old_arm64_open_memory)(base, size, location, location_checksum, mem_map,
-                                           oat_dex_file, error_msg);
+                                    oat_dex_file, error_msg);
 }
 /////////////////////
 
@@ -120,10 +119,9 @@ static void *
 (new_nougat_open_memory)(void *DexFile_thiz, uint8_t *base, size_t size, void *location,
                          uint32_t location_checksum, void *mem_map,
                          void *oat_dex_file, void *error_msg) {
-    if (size < DEX_MIN_LEN) {
-        return nullptr;
+    if (size > DEX_MIN_LEN) {
+        save_dex_file(base, size);
     }
-    save_dex_file(base, size);
     return (*old_nougat_open_memory)(DexFile_thiz, base, size, location, location_checksum, mem_map,
                                      oat_dex_file, error_msg);
 }
@@ -140,10 +138,9 @@ static void *new_opencommon(void *DexFile_thiz, uint8_t *base, size_t size, void
                             uint32_t location_checksum, void *oat_dex_file, bool verify,
                             bool verify_checksum,
                             void *error_meessage, void *verify_result) {
-    if (size < DEX_MIN_LEN) {
-        return nullptr;
+    if (size > DEX_MIN_LEN) {
+        save_dex_file(base, size);
     }
-    save_dex_file(base, size);
     return (*old_opencommon)(DexFile_thiz, base, size, location, location_checksum,
                              oat_dex_file, verify, verify_checksum, error_meessage,
                              verify_result);