diff --git a/README.md b/README.md
index 6426f9d..5889f45 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Network performance testing tool for ESP32 based on iperf2.
 
 ## Hardware Requirements
 
-- ESP32 development board
+- ESP32, ESP32-S2, or ESP32-S3 development board
 - WiFi network
 
 ## Software Requirements
@@ -27,18 +27,30 @@ Network performance testing tool for ESP32 based on iperf2.
 . $HOME/Code/esp32/esp-idf/export.sh
 ```
 
-2. Configure WiFi credentials:
+2. Set the target chip (choose one):
+```bash
+# For ESP32
+idf.py set-target esp32
+
+# For ESP32-S2
+idf.py set-target esp32s2
+
+# For ESP32-S3
+idf.py set-target esp32s3
+```
+
+3. Configure WiFi credentials:
 ```bash
 idf.py menuconfig
 ```
 Navigate to "ESP32 iperf Configuration" and set your SSID and password.
 
-3. Build the project:
+4. Build the project:
 ```bash
 idf.py build
 ```
 
-4. Flash to ESP32:
+5. Flash to your device:
 ```bash
 idf.py -p /dev/ttyUSB0 flash monitor
 ```