diff --git a/lib/wasm-micro-runtime b/lib/wasm-micro-runtime
index 72c06b5..da95bab 160000
--- a/lib/wasm-micro-runtime
+++ b/lib/wasm-micro-runtime
@@ -1 +1 @@
-Subproject commit 72c06b5c507a01645909a67e9d7320b045cbbcf0
+Subproject commit da95babb0197dd37a8b227bf9e76ee7ec500414a
diff --git a/src/wamr.cpp b/src/wamr.cpp
index 3f24c94..ffa32fc 100644
--- a/src/wamr.cpp
+++ b/src/wamr.cpp
@@ -116,7 +116,7 @@ int WAMRInstance::invoke_fopen(std::string &path, uint32 option) {
     return -1;
 };
 int WAMRInstance::invoke_frenumber(uint32 fd, uint32 to) {
-    auto name = "__wasi_fd_renumber";
+    auto name = "fd_renumber";
     if (!(func = wasm_runtime_lookup_function(module_inst, name, nullptr))) {
         LOGV(ERROR) << "The wasi fopen function is not found.";
         auto target_module = get_module_instance()->e;
diff --git a/src/wamr_wasi_context.cpp b/src/wamr_wasi_context.cpp
index 2a2ec08..105c19b 100644
--- a/src/wamr_wasi_context.cpp
+++ b/src/wamr_wasi_context.cpp
@@ -3,6 +3,7 @@
 //
 #include "wamr_wasi_context.h"
 #include "wamr.h"
+#include <string>
 extern WAMRInstance *wamr;
 void WAMRWASIContext::dump_impl(WASIContext *env) {
     for (int i = 0; i < wamr->dir_.size(); i++) {
@@ -20,6 +21,12 @@ void WAMRWASIContext::dump_impl(WASIContext *env) {
 }
 void WAMRWASIContext::restore_impl(WASIContext *env) {
     int r;
+    // std::string stdin_fd= "/dev/stdin";
+    // wamr->invoke_fopen(stdin_fd, 0);
+    // std::string stdout_fd= "/dev/stdout";
+    // wamr->invoke_fopen(stdout_fd, 0);
+    // std::string stderr_fd= "/dev/stderr";
+    // wamr->invoke_fopen(stderr_fd, 0);
     for (auto [fd, res] : this->fd_map) {
         // differ from path from file
         LOGV(INFO) << "fd: " << fd << " path: " << std::get<0>(res) << " flags: " << std::get<1>(res)
diff --git a/test/read-file.c b/test/read-file.c
index 487dec9..484ce5b 100644
--- a/test/read-file.c
+++ b/test/read-file.c
@@ -65,6 +65,8 @@ int main() {
    size_t len2 = strlen(line2);
 
    fwrite(line1, sizeof(char), len1, file3);
+   //ntwritten
+   // checkpoint: lib_wasi_wrapper fwrite system record 
    
 
     // volatile int c = 0;