diff --git a/thinkpad_unlock_bios.c b/thinkpad_unlock_bios.c
index 6431c61..9886546 100644
--- a/thinkpad_unlock_bios.c
+++ b/thinkpad_unlock_bios.c
@@ -2,6 +2,12 @@
 #include <stdlib.h>
 
 /* run this program using the console pauser or add your own getch, system("pause") or input loop */
+struct mac_tab
+{
+	const unsigned long len;
+	const unsigned long vel[];
+};
+
 
 const char bios_head_X250[32]=
 {
@@ -12,6 +18,16 @@ const char bios_head_X260[32]=
 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x5A,0xA5,0xF0,0x0F,0x03,0x00,0x04,0x00,0x08,0x02,0x10,0x42,0x30,0x03,0x31,0x00
 };
 
+struct mac_tab x250_mac=
+{
+	0,
+	{0}
+};
+struct mac_tab x260_mac=
+{
+	2,
+	{0x1000,0x2000}
+};
 /*
 bios type:
 
@@ -23,6 +39,7 @@ bios type:
 */
 char bios_type=0; 
 char buff[0xffffff];
+struct mac_tab *chage_mac_tab;
 char outputdir[256];
 char inputdir[256];
 char chack_str(const char *a,char *b,int len)
@@ -52,10 +69,12 @@ void change_bios_type()
 		if(bios_type==1)
 		{
 			unlock_bios=fopen("./X250.bbb","rb");
+			chage_mac_tab=&x250_mac;
 		}
 		if(bios_type==2)
 		{
 			unlock_bios=fopen("./X260.bbb","rb");
+			chage_mac_tab=&x260_mac;
 		}
 		if(unlock_bios==NULL)
 		{
@@ -78,17 +97,18 @@ void change_bios_type()
 char tryunlock(char *dir)
 {
 	int a=0;
-	if(dir==NULL)
+	unsigned long mac_t=0;
+	if(dir==NULL)//手动输入模式 
 	{
 		printf(" 直接输入BIOS路径:\n 或输入命令:\n change    改变BIOS类型。\n exit      退出程序 \n");
-		for(a=0;a<256;a++)
+		for(a=0;a<256;a++)//清空输入缓存 
 		{
 			inputdir[a]=0;
 		}
-		scanf("%s",inputdir);
-		if(chack_str("change",inputdir,6)==0)
+		scanf("%s",inputdir);//读取输入 
+		if(chack_str("change",inputdir,6)==0)//读取特殊字符串 
 		{
-			change_bios_type();
+			change_bios_type();             //改变bios类型 
 			return 1;
 		}
 		if(chack_str("exit",inputdir,4)==0)
@@ -98,89 +118,99 @@ char tryunlock(char *dir)
 	}else
 	{
 		a=0;
-		while(dir[a]!='\0')
+		while(dir[a]!='\0')//拖入文件模式 
 		{
 			inputdir[a]=dir[a];
 			a++;
 		}
 	}
 
-	if(bios_type==0)
+	if(bios_type==0)  //还没设置bios类型 
 	{
-		change_bios_type();
+		change_bios_type();//改变bios类型 
 		
 	}
 	
 	printf("Input flie  %s\n",inputdir);
 	
-	FILE *bios=NULL;
-	FILE *output_bios=NULL;
+	FILE *bios=NULL;         //将要破解的bios 
+	FILE *output_bios=NULL;	//输出的bios 
 	bios=fopen(inputdir,"rb");
 	char id[32];
 	
-	if(bios==NULL)
+	if(bios==NULL)//打开将要破解的bios失败 可能是路径错误 
 	{
 		printf("ERROR. can't Open file ..\n");
+		return 0; 
 	}else
 	{
-		fread(id,32,1,bios);
+		fread(id,32,1,bios);//读取将要破解的bios的前32个字节 鉴定是不是bios文件 
 		if(chack_str(buff,id,32))
 		{
 			printf("ERROR. Not Bios File\n");
+			return 0;
 		}else
 		{
 			//printf("try it..\n");
-			if(fseek(bios,0xf00,SEEK_SET))
+			if(fseek(bios,0xf00,SEEK_SET))//读取将要破解的Bios的ID 
 			{
 				printf("ERROR. -0\n");
+				return 0;
 			}else
 			{
 				fread(id,32,1,bios);
-				for(a=0;a<32;a++)
+				for(a=0;a<32;a++)//将ID写入已破解bios 
 				{
 					buff[0xf00+a]=id[a];
 				}
-				
-				//change MAC ADD
-				if(fseek(bios,0x1000,SEEK_SET))
+			}		
+			//更改MAC地址 
+			if(fseek(bios,0x1000,SEEK_SET))//读取将要破解的Bios的MAC
+			{
+				printf("ERROR. -0\n");
+				return 0;
+			}else
+			{
+				for(a=0;a<32;a++)//复用id数组 
 				{
-					printf("ERROR. -0\n");
-				}else
+					id[a]=0;
+				}
+				fread(id,6,1,bios);
+				//写入到已破解bios,有好几个地址 
+				for(mac_t=0;mac_t<chage_mac_tab->len;mac_t++)
 				{
-					for(a=0;a<32;a++)
-					{
-						id[a]=0;
-					}
-					fread(id,6,1,bios);
 					for(a=0;a<6;a++)
 					{
-						buff[0x1000+a]=id[a];
+						buff[chage_mac_tab->vel[mac_t]+a]=id[a];
 					}
-					
-					for(a=0;a<256;a++)
-					{
-						outputdir[a]=0;
-					}
-					printf("MAC: %02X%02X%02X%02X%02X%02X \n",id[0],id[1],id[2],id[3],id[4],id[5]);
-					sprintf(outputdir,"%s%s",inputdir,"_unlock.bin");
-					printf("Output flie %s",outputdir);
-					output_bios=fopen(outputdir,"wb");
-					if(output_bios==NULL)
-					{
-						printf("ERROR. can't Output file ..\n");
-					}else
-					{
-						fwrite(buff,0xffffff,1,output_bios);
-						fclose(output_bios);
-					}
-					
-					printf("\n\n");					
-					
 				}
+
+			}
+				
+			for(a=0;a<256;a++)
+			{
+				outputdir[a]=0;
+			}
+			printf("MAC: %02X%02X%02X%02X%02X%02X \n",id[0],id[1],id[2],id[3],id[4],id[5]);
+			sprintf(outputdir,"%s%s",inputdir,"_unlock.bin");
+			printf("Output flie %s",outputdir);
+			output_bios=fopen(outputdir,"wb");
+			if(output_bios==NULL)
+			{
+				printf("ERROR. can't Output file ..\n");
+			}else
+			{
+				fwrite(buff,0xffffff,1,output_bios);
+				fclose(output_bios);
+			}
+			
+			printf("\n\n");					
+					
+				
 				
 			
 
-			}
+			
 		}
 		
 	}
@@ -244,6 +274,7 @@ char tryunlock(char *dir)
 	
 int main(int argc, char *argv[])
 {
+
 	printf("ThinkPad Bios unlock..v0.1\n\n\n");
 	if(argc==1)
 	{
diff --git a/thinkpad_unlock_bios.exe b/thinkpad_unlock_bios.exe
index 87d9ef2..25f9d28 100644
Binary files a/thinkpad_unlock_bios.exe and b/thinkpad_unlock_bios.exe differ