diff --git a/PSNee_V8/PSNee_V8.ino b/PSNee_V8/PSNee_V8.ino
index 07c36b3..89cdaa8 100644
--- a/PSNee_V8/PSNee_V8.ino
+++ b/PSNee_V8/PSNee_V8.ino
@@ -40,15 +40,16 @@
 //------------------------------------------------------------------------------------------------
 
 #define AUTOREGION         // If disable, send all SCEX codes, instead of the code selected model.
-#define PATCH_SW           // Enables hardware support for disabling BIOS patching.
+//#define PATCH_SW         // Enables hardware support for disabling BIOS patching.
+//#define MOD_SW           // Enables hardware support for disabling the entire modchip.         
 
 //------------------------------------------------------------------------------------------------
 //                         Code section
 //------------------------------------------------------------------------------------------------
 
-#include "config.h"
-#include "settings.h"
-#include "patching.h"
+#include "include/config.h"
+#include "include/settings.h"
+#include "include/patching.h"
 
 volatile uint8_t count_isr = 0;
 volatile uint32_t microsec = 0;
@@ -177,16 +178,16 @@ int main()
 	uint16_t highs = 0, lows = 0;
 
 	#if !defined(UC_ALL) && !defined(PAL_FAT) && !defined(SCPH_103) && \
-      !defined(SCPH_102) && !defined(SCPH_100) && !defined(SCPH_7000_9000) && \
-      !defined(SCPH_5500) && !defined(SCPH_3500_5000) && !defined(SCPH_3000) && \
-      !defined(SCPH_1000)
-     #error "Console not selected! Please uncoment #define with SCPH model number."
-  	#elif !(defined(UC_ALL) ^ defined(PAL_FAT) ^ defined(SCPH_103) ^ \
-          defined(SCPH_102) ^ defined(SCPH_100) ^ defined(SCPH_7000_9000) ^ \
-          defined(SCPH_5500) ^ defined(SCPH_3500_5000) ^ defined(SCPH_3000) ^ \
-          defined(SCPH_1000))
-     #error "May be selected only one console! Please check #define with SCPH model number."
-  	#endif
+	  !defined(SCPH_102) && !defined(SCPH_100) && !defined(SCPH_7000_9000) && \
+	  !defined(SCPH_5500) && !defined(SCPH_3500_5000) && !defined(SCPH_3000) && \
+	  !defined(SCPH_1000)
+    	#error "Console not selected! Please uncomment #define with SCPH model number."
+	#elif !(defined(UC_ALL) ^ defined(PAL_FAT) ^ defined(SCPH_103) ^ \
+	  defined(SCPH_102) ^ defined(SCPH_100) ^ defined(SCPH_7000_9000) ^ \
+	  defined(SCPH_5500) ^ defined(SCPH_3500_5000) ^ defined(SCPH_3000) ^ \
+	  defined(SCPH_1000))
+    	#error "May be selected only one console! Please check #define with SCPH model number."
+	#endif
  
 	#ifndef AUTOREGION
 	 const char region[3] = {'e', 'a', 'i'};
@@ -194,6 +195,11 @@ int main()
 
 	Init();
 
+	#if defined(MOD_SW)
+	 if (MOD_SW_CHECK == 0)
+		return 0;
+	#endif
+
 	#ifdef LED_USE
 	 LED_ON;
 	#endif
diff --git a/PSNee_V8/include/config.h b/PSNee_V8/include/config.h
index ec24baf..cc6e9d8 100644
--- a/PSNee_V8/include/config.h
+++ b/PSNee_V8/include/config.h
@@ -38,6 +38,9 @@
 #define SW_USE			PORTD |= (1<<5)
 #define SW_CHECK		(PIND & (1<<5))
 
+#define MOD_SW_USE		PORTB |= (1<<2)
+#define MOD_SW_CHECK	(PINB & (1<<2))
+
 #define LED_USE			DDRB |= (1<<5)
 #define LED_ON			PORTB |= (1<<5)
 #define LED_OFF			PORTB &= ~(1<<5)
@@ -52,6 +55,10 @@ void Init()
 	#ifdef PATCH_SW
 	 SW_USE;
 	#endif
+	
+	#ifdef MOD_SW
+	 MOD_SW_USE;
+	#endif
 
 	LED_USE;
 	sei();
diff --git a/README.md b/README.md
index aad58cb..7d478ce 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,15 @@
-# PSNee V8
+# PSNee V8.1
 
-The first stealth modchip supporting unlocking BIOS of Japanese versions Sony PlayStation 1
+The first stealth modchip supporting unlocking BIOS of Japanese versions Sony PlayStation 1, and disabling the modchip itself.
 
 ![Logo](images/PSNee_V8_logo.png)
 Developed by **brill** & **postal2201**, based on PSNee V7 open source project.  
 - http://www.emu-land.net/forum/index.php/topic,85934.0.html
 
+The MOD_SWITCH feature added by **Victini378** and designed in cooperation with **SunAlphiusWu**.
+
 ## Supported platforms
-PsNee V8 supports the following MCU's:  
+PsNee V8.1 supports the following MCU's:  
 - ATmega328(A/P/PA) @16Mhz  
 - ATmega168(A/P/PA) @16Mhz  
 
@@ -28,7 +30,7 @@ Example of correct setting for ATmega328P:\
 
 ![ArduinoIDE](images/example.png)
 
-After that select the type console - uncoment define in file project(*.ino)
+After that select the type console - uncomment define in file project(*.ino)
 
 ![Console](images/console.png)