diff --git a/sdk b/sdk
index bb019ca..108101c 160000
--- a/sdk
+++ b/sdk
@@ -1 +1 @@
-Subproject commit bb019caee2d1089382b2ffd4811d178e4d63fb02
+Subproject commit 108101c24780ceeabbd7dbaa380467fbabf0060a
diff --git a/usrc/main.cpp b/usrc/main.cpp
index 20d1221..694c098 100644
--- a/usrc/main.cpp
+++ b/usrc/main.cpp
@@ -150,7 +150,7 @@ void regfn() {
   // setzero
   // set4095
   // moveto
-
+#if 0
   cmdScheduler.registerCmd("mini_servo_set_zero", [](int argc, char** argv, CmdScheduler::CmdProcessContext* context) {
     CHECK_ARGC(1);
     int id = atoi(argv[1]);
@@ -203,6 +203,7 @@ void regfn() {
     CHECK_ARGC(0);
     g_xyrobotctrlmodule->enable(false);
   });
+#endif
 }
 
 extern "C" {
diff --git a/usrc/step_motor_cmd_reg.cpp b/usrc/step_motor_cmd_reg.cpp
index a6f3817..2a27a60 100644
--- a/usrc/step_motor_cmd_reg.cpp
+++ b/usrc/step_motor_cmd_reg.cpp
@@ -61,6 +61,7 @@ static bool distance_mm_to_step(int motorid, float distance_mm, int32_t* distanc
 }
 
 void step_motor_cmd_reg() {
+#if 0
   cmdScheduler.registerCmd("help",  //
                            [](int argc, char** argv, CmdScheduler::CmdProcessContext* context) { ZLOGI(TAG, "do_help"); });
   cmdScheduler.registerCmd("reset_board",  //
@@ -349,4 +350,5 @@ void step_motor_cmd_reg() {
     CHECK_ARGC(1);
     osDelay(atoi(argv[1]));
   });
+#endif
 }