diff --git a/mace/core/runtime/hexagon/hexagon_control_wrapper.cc b/mace/core/runtime/hexagon/hexagon_control_wrapper.cc
index 62312744845055bc05370dc51bb6e8e7ed33c812..4e435ebf09d75b26d6cdb63262cc25de6949cd35 100644
--- a/mace/core/runtime/hexagon/hexagon_control_wrapper.cc
+++ b/mace/core/runtime/hexagon/hexagon_control_wrapper.cc
@@ -59,7 +59,11 @@ bool HexagonControlWrapper::Config() {
 
 bool HexagonControlWrapper::Init() {
   LOG(INFO) << "Hexagon init";
+#ifdef MACE_USE_NNLIB_OLD
+  nn_id_ = hexagon_nn_init();
+#else
   MACE_CHECK(hexagon_nn_init(&nn_id_) == 0, "hexagon_nn_init failed");
+#endif
   ResetPerfInfo();
   return true;
 }
@@ -141,6 +145,9 @@ bool HexagonControlWrapper::SetupGraph(const NetDef &net_def,
       }
       outputs.resize(op.output_shape().size());
       for (int i = 0; i < op.output_shape().size(); ++i) {
+#ifdef MACE_USE_NNLIB_OLD
+        outputs[i].max_size = op.out_max_byte_size()[i];
+#else
         outputs[i].rank = op.output_shape()[i].dims().size();
         for (size_t j = 0; j < outputs[i].rank; ++j) {
           outputs[i].max_sizes[j] = op.output_shape()[i].dims()[j];
@@ -154,6 +161,7 @@ bool HexagonControlWrapper::SetupGraph(const NetDef &net_def,
             static_cast<DataType>(op.output_type()[i]));
         outputs[i].zero_offset = 0;
         outputs[i].stepsize = 0;
+#endif
       }
       cached_inputs.push_back(inputs);
       cached_outputs.push_back(outputs);
diff --git a/third_party/nnlib/hexagon_nn.h b/third_party/nnlib/hexagon_nn.h
index b7485c93f4db702b60091b66ac2a9af9b2438719..84933ddb5ea6d3f06a99174a431c8746226fd1b0 100644
--- a/third_party/nnlib/hexagon_nn.h
+++ b/third_party/nnlib/hexagon_nn.h
@@ -35,6 +35,198 @@
 
 #ifndef THIRD_PARTY_NNLIB_HEXAGON_NN_H_
 #define THIRD_PARTY_NNLIB_HEXAGON_NN_H_
+
+#ifdef MACE_USE_NNLIB_OLD
+
+#ifndef __QAIC_HEADER
+#define __QAIC_HEADER(ff) ff
+#endif  // __QAIC_HEADER
+
+#ifndef __QAIC_HEADER_EXPORT
+#define __QAIC_HEADER_EXPORT
+#endif  // __QAIC_HEADER_EXPORT
+
+#ifndef __QAIC_HEADER_ATTRIBUTE
+#define __QAIC_HEADER_ATTRIBUTE
+#endif  // __QAIC_HEADER_ATTRIBUTE
+
+#ifndef __QAIC_IMPL
+#define __QAIC_IMPL(ff) ff
+#endif  // __QAIC_IMPL
+
+#ifndef __QAIC_IMPL_EXPORT
+#define __QAIC_IMPL_EXPORT
+#endif  // __QAIC_IMPL_EXPORT
+
+#ifndef __QAIC_IMPL_ATTRIBUTE
+#define __QAIC_IMPL_ATTRIBUTE
+#endif  // __QAIC_IMPL_ATTRIBUTE
+#ifdef __cplusplus
+extern "C" {
+#endif
+#if !defined(__QAIC_STRING1_OBJECT_DEFINED__) && !defined(__STRING1_OBJECT__)
+#define __QAIC_STRING1_OBJECT_DEFINED__
+#define __STRING1_OBJECT__
+typedef struct _cstring1_s {
+  char *data;
+  int dataLen;
+} _cstring1_t;
+
+#endif /* __QAIC_STRING1_OBJECT_DEFINED__ */
+typedef struct hexagon_nn_input hexagon_nn_input;
+struct hexagon_nn_input {
+  unsigned int src_id;
+  unsigned int output_idx;
+};
+typedef struct hexagon_nn_output hexagon_nn_output;
+struct hexagon_nn_output {
+  unsigned int max_size;
+  unsigned int unused;
+};
+typedef struct hexagon_nn_perfinfo hexagon_nn_perfinfo;
+struct hexagon_nn_perfinfo {
+  unsigned int node_id;
+  unsigned int node_type;
+  unsigned int executions;
+  unsigned int unused;
+  unsigned int counter_lo;
+  unsigned int counter_hi;
+};
+typedef int hexagon_nn_nn_id;
+enum hexagon_nn_padding_type {
+  NN_PAD_NA,
+  NN_PAD_SAME,
+  NN_PAD_VALID,
+  NN_PAD_MIRROR_REFLECT,
+  NN_PAD_MIRROR_SYMMETRIC,
+  NN_PAD_SAME_CAFFE,
+  _32BIT_PLACEHOLDER_hexagon_nn_padding_type = 0x7fffffff
+};
+typedef enum hexagon_nn_padding_type hexagon_nn_padding_type;
+typedef struct hexagon_nn_tensordef hexagon_nn_tensordef;
+struct hexagon_nn_tensordef {
+  unsigned int batches;
+  unsigned int height;
+  unsigned int width;
+  unsigned int depth;
+  unsigned char *data;
+  int dataLen;
+  unsigned int data_valid_len;
+  unsigned int unused;
+};
+typedef struct hexagon_nn_op_node hexagon_nn_op_node;
+struct hexagon_nn_op_node {
+  unsigned int node_id;
+  unsigned int operation;
+  hexagon_nn_padding_type padding;
+  hexagon_nn_input *inputs;
+  int inputsLen;
+  hexagon_nn_output *outputs;
+  int outputsLen;
+};
+typedef struct hexagon_nn_const_node hexagon_nn_const_node;
+struct hexagon_nn_const_node {
+  unsigned int node_id;
+  hexagon_nn_tensordef tensor;
+};
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_config)(void)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_init)(void)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_set_debug_level)(
+    hexagon_nn_nn_id id, int level) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_set_graph_mode)(
+    hexagon_nn_nn_id id, int mode) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_snpprint)(hexagon_nn_nn_id id,
+                                                            unsigned char *buf,
+                                                            int bufLen)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_getlog)(hexagon_nn_nn_id id,
+                                                          unsigned char *buf,
+                                                          int bufLen)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_append_node)(
+    hexagon_nn_nn_id id,
+    unsigned int node_id,
+    unsigned int operation,
+    hexagon_nn_padding_type padding,
+    const hexagon_nn_input *inputs,
+    int inputsLen,
+    const hexagon_nn_output *outputs,
+    int outputsLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_append_node_list)(
+    hexagon_nn_nn_id id,
+    const hexagon_nn_op_node *ops,
+    int opsLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_append_const_node)(
+    hexagon_nn_nn_id id,
+    unsigned int node_id,
+    unsigned int batches,
+    unsigned int height,
+    unsigned int width,
+    unsigned int depth,
+    const unsigned char *data,
+    int dataLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_append_const_node_list)(
+    hexagon_nn_nn_id id,
+    const hexagon_nn_const_node *consts,
+    int constsLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_prepare)(hexagon_nn_nn_id id)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_execute)(
+    hexagon_nn_nn_id id,
+    unsigned int batches_in,
+    unsigned int height_in,
+    unsigned int width_in,
+    unsigned int depth_in,
+    const unsigned char *data_in,
+    int data_inLen,
+    unsigned int *batches_out,
+    unsigned int *height_out,
+    unsigned int *width_out,
+    unsigned int *depth_out,
+    unsigned char *data_out,
+    int data_outLen,
+    unsigned int *data_len_out) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_teardown)(hexagon_nn_nn_id id)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_set_powersave_level)(
+    unsigned int level) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_get_perfinfo)(
+    hexagon_nn_nn_id id,
+    hexagon_nn_perfinfo *info_out,
+    int info_outLen,
+    unsigned int *n_items) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_reset_perfinfo)(
+    hexagon_nn_nn_id id, unsigned int event) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_last_execution_cycles)(
+    hexagon_nn_nn_id id,
+    unsigned int *cycles_lo,
+    unsigned int *cycles_hi) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_version)(int *ver)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_op_name_to_id)(
+    const char *name, unsigned int *node_id) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_op_id_to_name)(
+    unsigned int node_id, char *name, int nameLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_disable_dcvs)(void)
+    __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_GetHexagonBinaryVersion)(
+    int *ver) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_PrintLog)(
+    const unsigned char *buf, int bufLen) __QAIC_HEADER_ATTRIBUTE;
+__QAIC_HEADER_EXPORT int __QAIC_HEADER(hexagon_nn_execute_new)(
+    hexagon_nn_nn_id id,
+    const hexagon_nn_tensordef *inputs,
+    int inputsLen,
+    hexagon_nn_tensordef *outputs,
+    int outputsLen) __QAIC_HEADER_ATTRIBUTE;
+#ifdef __cplusplus
+}
+#endif
+
+#else  // nnlib version
+
 #ifndef __QAIC_HEADER
 #define __QAIC_HEADER(ff) ff
 #endif  //__QAIC_HEADER
@@ -226,4 +418,7 @@ __QAIC_HEADER_EXPORT unsigned int __QAIC_HEADER(hexagon_nn_get_dsp_offset)(void)
 #ifdef __cplusplus
 }
 #endif
+
+#endif  // nnlib version
+
 #endif  // THIRD_PARTY_NNLIB_HEXAGON_NN_H_
diff --git a/third_party/nnlib/libhexagon_controller_old.so b/third_party/nnlib/libhexagon_controller_old.so
new file mode 100755
index 0000000000000000000000000000000000000000..1c5a4111f9958eddfb0426c3010bc93ad8e13119
Binary files /dev/null and b/third_party/nnlib/libhexagon_controller_old.so differ
diff --git a/third_party/nnlib/ops.h b/third_party/nnlib/ops.h
index 43670832fbd693ffe50d4767a71586e4400f9f2e..48318c7048a58c2b8d741917a26325fbc909ff94 100644
--- a/third_party/nnlib/ops.h
+++ b/third_party/nnlib/ops.h
@@ -79,6 +79,147 @@
  */
 // NOLINT(build/header_guard)
 
+#ifdef MACE_USE_NNLIB_OLD
+
+DEF_OP(INPUT)
+DEF_OP(OUTPUT)
+DEF_OP(Nop)
+DEF_OP(Const)
+DEF_OP(Check)
+DEF_OP(Close_f)
+DEF_OP(Close_quint8)
+DEF_OP(Close_q_quint8)
+DEF_OP(Close_int32)
+DEF_OP(Close_qint32)
+DEF_OP(PPrint_8)
+DEF_OP(PPrint_32)
+DEF_OP(PPrint_f)
+DEF_OP(PreFree)
+DEF_OP(Flatten)
+
+#ifndef DEF_OP_WREF
+#define DEF_OP_WREF(NAME) DEF_OP(NAME) DEF_OP(NAME##_ref)
+#define __SELF_DEF_OP_WREF
+#endif
+
+DEF_OP_WREF(QuantizedConv2d_8x8to32)
+DEF_OP_WREF(QuantizedMatMul_8x8to32)
+DEF_OP_WREF(QuantizeDownAndShrinkRange_32to8)
+DEF_OP_WREF(QuantizedRelu_8)
+DEF_OP_WREF(QuantizedReluX_8)
+DEF_OP_WREF(QuantizedMaxPool_8)
+DEF_OP_WREF(QuantizedAvgPool_8)
+DEF_OP_WREF(QuantizedConcat_8)
+DEF_OP_WREF(QuantizedBiasAdd_8p8to32)
+DEF_OP_WREF(Min_f)
+DEF_OP_WREF(Max_f)
+DEF_OP_WREF(Quantize)
+DEF_OP_WREF(Dequantize)
+DEF_OP_WREF(Supernode_8x8p8to8)
+
+DEF_OP(QuantizedFlatten)
+DEF_OP(Softmax_f)
+DEF_OP(Conv2d_f)
+DEF_OP(MatMul_f)
+DEF_OP(Relu_f)
+DEF_OP(ReluX_f)
+DEF_OP(AvgPool_f)
+DEF_OP(MaxPool_f)
+DEF_OP(Concat_f)
+DEF_OP(BiasAdd_f)
+DEF_OP(LRN_f)
+
+DEF_OP(Variable)
+DEF_OP(Assign)
+DEF_OP(Reshape)
+DEF_OP(QuantizedReshape)
+DEF_OP(Tanh_f)
+DEF_OP(Sigmoid_f)
+DEF_OP(Slice_8)
+DEF_OP(Slice_f)
+DEF_OP(QuantizedSlice_8)
+DEF_OP(Add_f)
+DEF_OP(Mul_f)
+DEF_OP(Minimum_f)
+DEF_OP(Maximum_f)
+
+DEF_OP_WREF(Requantize_32to8)
+DEF_OP_WREF(RequantizationRange_32)
+
+DEF_OP(Neg_f)
+DEF_OP(Sub_f)
+DEF_OP(AddN_f)
+DEF_OP(Range_int32)
+DEF_OP(Rank_int32)
+DEF_OP(Transpose_int32)
+DEF_OP(Transpose_f)
+DEF_OP(InstanceNorm_f)
+DEF_OP_WREF(QuantizedInstanceNorm_8)
+DEF_OP(Sub_int32)
+DEF_OP(Add_int32)
+DEF_OP(Split_f)
+DEF_OP(Dequantize_qint32_f)
+DEF_OP(PRelu_f)
+DEF_OP_WREF(QuantizedPRelu_8)
+DEF_OP(Sum_f)
+DEF_OP(Prod_f)
+DEF_OP(Mul_int32)
+DEF_OP(LogicalAnd_int32)
+DEF_OP(LogicalOr_int32)
+DEF_OP(LogicalXor_int32)
+DEF_OP(Shape_int32)
+DEF_OP(Pack_int32)
+DEF_OP(MirrorPad_f)
+DEF_OP(ResizeNearestNeighbor_f)
+DEF_OP(StridedSlice_int32)
+DEF_OP(StridedSlice_f)
+DEF_OP(ExpandDims_int32)
+DEF_OP(ExpandDims_f)
+
+DEF_OP(LogSoftmax_f)
+DEF_OP(Split_int32)
+DEF_OP(QuantizedSplit_8)
+
+DEF_OP(Deconv_f)
+DEF_OP_WREF(QuantizedDeconv_8x8to32)
+
+DEF_OP_WREF(QuantizedMul_8x8to32)
+DEF_OP_WREF(QuantizedAdd_8p8to32)
+DEF_OP_WREF(QuantizedSigmoid_8)
+DEF_OP_WREF(QuantizedTanh_8)
+DEF_OP_WREF(QuantizedSoftmax_8)
+DEF_OP_WREF(QuantizedLRN_8)
+DEF_OP_WREF(QuantizedSub_8p8to32)
+DEF_OP_WREF(QuantizedMaximum_8)
+DEF_OP_WREF(QuantizedMinimum_8)
+
+DEF_OP(Pad_f)
+DEF_OP(SpaceToBatchND_f)
+DEF_OP(BatchToSpaceND_f)
+DEF_OP(QuantizedSpaceToBatchND_8)
+DEF_OP(QuantizedBatchToSpaceND_8)
+DEF_OP(QuantizedPad_8)
+DEF_OP(ResizeBilinear_f)
+DEF_OP(QuantizedResizeBilinear_8)
+DEF_OP(ConcatV2_f)
+DEF_OP(ConcatV2_int32)
+DEF_OP(Prod_int32)
+DEF_OP(Slice_int32)
+
+DEF_OP(QuantizedAdd_8p8to8)
+
+DEF_OP_WREF(AutoQuantize)
+DEF_OP_WREF(QuantizedDepthwiseConv2d_8x8to32)
+DEF_OP(DepthwiseConv2d_f)
+DEF_OP(QuantizedBiasAdd_8p8to8)
+
+#ifdef __SELF_DEF_OP_WREF
+#undef __SELF_DEF_OP_WREF
+#undef DEF_OP_WREF
+#endif
+
+#else  // nnlib version
+
 DEF_OP(INPUT)
 DEF_OP(OUTPUT)
 DEF_OP(Nop)
@@ -285,3 +426,5 @@ DEF_OP(DepthToSpace_8)
 #undef __SELF_DEF_OP_WREF
 #undef DEF_OP_WREF
 #endif
+
+#endif  // nnlib version