diff --git a/motor_tools/README.md b/motor_tools/README.md
index a0bf517..ccfb9c1 100644
--- a/motor_tools/README.md
+++ b/motor_tools/README.md
@@ -9,10 +9,23 @@ This is a set of tools to operate the internal configuration of the motor throug
 `swmotor`: Switch to motor mode (Default), Motor while be enable.(Configuration cannot be modified)  
 `cancelboot`: Rescue modes, such as misoperation (such as upgrade failure), cause the motor to turn into brick.  
 
+### How to distinguish which mode the motor is currently in?  
+Look at the green LED on the back of the motor.
+
+|  Motor Mode   | Bootloader Mode  |
+|  ----  | ----  |
+| ![Motor Mode](motor_mode.gif)  | ![Bootloader Mode](bootloader_mode.gif) |
+| Slow Blink.  | Fast Blink 3 times. |
+
 ## Using
 
 The downloaded linux executable file does not have permission to run directly, please:  
-`sudo chmod 777 ./unisp ./changeid ./swboot ./swmotor ./cancelboot`
+`sudo chmod 777 ./unisp ./changeid ./swboot ./swmotor ./cancelboot`  
+run example for changeid:  
+`sudo ./changeid /dev/ttyUSB0 0 2`
+
+
+## Other
 
 Unitree MotorToolbox does not require root permissions to function properly, but the exception is that your `ttyUSB` device must have sufficient permissions. like: 
 
diff --git a/motor_tools/bootloader_mode.gif b/motor_tools/bootloader_mode.gif
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diff --git a/motor_tools/motor_mode.gif b/motor_tools/motor_mode.gif
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index 0000000..ef9dc20
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