diff --git a/jni/Application.mk b/jni/Application.mk
index 3e5c8225..a17746ee 100644
--- a/jni/Application.mk
+++ b/jni/Application.mk
@@ -1,4 +1,4 @@
 APP_ABI      			:= armeabi armeabi-v7a arm64-v8a mips x86
-APP_PLATFORM 			:= android-21
+APP_PLATFORM 			:= android-16
 APP_STL      			:= stlport_static
-NDK_TOOLCHAIN_VERSION 	:= 4.9
+NDK_TOOLCHAIN_VERSION 	:= 4.6
diff --git a/jni/pdnsd/src/cache.c b/jni/pdnsd/src/cache.c
index 4fbb7fb9..82d70882 100644
--- a/jni/pdnsd/src/cache.c
+++ b/jni/pdnsd/src/cache.c
@@ -2697,6 +2697,12 @@ int dump_cache(int fd, const unsigned char *name, int exact)
 	return rv;
 }
 
+char *stpcpy(char *dest, char const *src)
+{
+  strcpy(dest, src);
+  return dest + strlen(dest);
+}
+
 
 #if DEBUG>0
 
diff --git a/libs/arm64-v8a/pdnsd b/libs/arm64-v8a/pdnsd
index 6fd98cae..4dd1af42 100755
Binary files a/libs/arm64-v8a/pdnsd and b/libs/arm64-v8a/pdnsd differ
diff --git a/libs/armeabi-v7a/libtun2socks.so b/libs/armeabi-v7a/libtun2socks.so
index 26b6d08d..02db968b 100755
Binary files a/libs/armeabi-v7a/libtun2socks.so and b/libs/armeabi-v7a/libtun2socks.so differ
diff --git a/libs/armeabi-v7a/pdnsd b/libs/armeabi-v7a/pdnsd
index 88d8c850..38eb74cc 100755
Binary files a/libs/armeabi-v7a/pdnsd and b/libs/armeabi-v7a/pdnsd differ
diff --git a/libs/armeabi/libtun2socks.so b/libs/armeabi/libtun2socks.so
index 6eaf2ac3..d43f63b1 100755
Binary files a/libs/armeabi/libtun2socks.so and b/libs/armeabi/libtun2socks.so differ
diff --git a/libs/mips/libtun2socks.so b/libs/mips/libtun2socks.so
index 81c1722e..1c494678 100755
Binary files a/libs/mips/libtun2socks.so and b/libs/mips/libtun2socks.so differ
diff --git a/libs/mips/pdnsd b/libs/mips/pdnsd
index eaa18983..acd2c6b4 100755
Binary files a/libs/mips/pdnsd and b/libs/mips/pdnsd differ
diff --git a/libs/x86/libtun2socks.so b/libs/x86/libtun2socks.so
index 0548a83a..be3b8f73 100755
Binary files a/libs/x86/libtun2socks.so and b/libs/x86/libtun2socks.so differ