diff --git a/bin/eagle.app.v6.flash.bin b/bin/eagle.app.v6.flash.bin
index fecf2bc..51cf0bf 100644
Binary files a/bin/eagle.app.v6.flash.bin and b/bin/eagle.app.v6.flash.bin differ
diff --git a/bin/eagle.app.v6.irom0text.bin b/bin/eagle.app.v6.irom0text.bin
index ff27211..ef96ffb 100755
Binary files a/bin/eagle.app.v6.irom0text.bin and b/bin/eagle.app.v6.irom0text.bin differ
diff --git a/user/config.c b/user/config.c
index bf2ae48..c36c3ed 100644
--- a/user/config.c
+++ b/user/config.c
@@ -86,6 +86,7 @@ void config_execute(void) {
 	mode = wifi_get_opmode();
 	if (mode != STATIONAP_MODE) {
 		wifi_set_opmode(STATIONAP_MODE);
+		os_delay_us(10000);
 		system_restart();
 	}
 
@@ -199,8 +200,10 @@ void config_cmd_baud(struct espconn *conn, uint8_t argc, char *argv[]) {
 			os_delay_us(10000);
 			uart_div_modify(0, UART_CLK_FREQ / baud);
 			flash_param->baud = baud;
-			flash_param_set();
-			espconn_sent(conn, MSG_OK, strlen(MSG_OK));
+			if (flash_param_set())
+				espconn_sent(conn, MSG_OK, strlen(MSG_OK));
+			else
+				espconn_sent(conn, MSG_ERROR, strlen(MSG_ERROR));
 		}
 	}
 }
@@ -223,14 +226,24 @@ void config_cmd_port(struct espconn *conn, uint8_t argc, char *argv[]) {
 		} else {
 			if (port != flash_param->port) {
 				flash_param->port = port;
-				flash_param_set();
-				espconn_sent(conn, MSG_OK, strlen(MSG_OK));
+				if (flash_param_set())
+					espconn_sent(conn, MSG_OK, strlen(MSG_OK));
+				else
+					espconn_sent(conn, MSG_ERROR, strlen(MSG_ERROR));
+				os_delay_us(10000);
 				system_restart();
 			} else {
 				espconn_sent(conn, MSG_OK, strlen(MSG_OK));
 			}
 		}
 	}
+// debug
+{
+	char buf[1024];
+	flash_param = flash_param_get();
+	os_sprintf(buf, "flash param:\n\tmagic\t%d\n\tversion\t%d\n\tbaud\t%d\n\tport\t%d\n", flash_param->magic, flash_param->version, flash_param->baud, flash_param->port);
+	espconn_sent(conn, buf, strlen(buf));
+}
 }
 
 void config_cmd_mode(struct espconn *conn, uint8_t argc, char *argv[]) {
@@ -252,6 +265,7 @@ void config_cmd_mode(struct espconn *conn, uint8_t argc, char *argv[]) {
 				wifi_set_opmode(mode);
 				ETS_UART_INTR_ENABLE();
 				espconn_sent(conn, MSG_OK, strlen(MSG_OK));
+				os_delay_us(10000);
 				system_restart();
 			} else {
 				espconn_sent(conn, MSG_OK, strlen(MSG_OK));
diff --git a/user/config_wifi.h b/user/config_wifi.h
new file mode 100644
index 0000000..2d81382
--- /dev/null
+++ b/user/config_wifi.h
@@ -0,0 +1,8 @@
+#undef STA_SSID
+#define STA_SSID	"root"
+#undef STA_PASSWORD
+#define STA_PASSWORD	"conortimothy"
+#undef AP_SSID
+#define AP_SSID		"toor"
+#undef AP_PASSWORD
+#define AP_PASSWORD	"conortimothy"
diff --git a/user/flash_param.c b/user/flash_param.c
index f745b16..e95c2b3 100644
--- a/user/flash_param.c
+++ b/user/flash_param.c
@@ -5,7 +5,8 @@
 #include "flash_param.h"
 
 #define FLASH_PARAM_START_SECTOR 0x3C
-#define FLASH_PARAM_ADDR (SPI_FLASH_SEC_SIZE * FLASH_PARAM_START_SECTOR)
+#define FLASH_PARAM_SECTOR (FLASH_PARAM_START_SECTOR + 0)
+#define FLASH_PARAM_ADDR (SPI_FLASH_SEC_SIZE * FLASH_PARAM_SECTOR)
 
 static int flash_param_loaded = 0;
 static flash_param_t flash_param;
@@ -16,7 +17,7 @@ void ICACHE_FLASH_ATTR flash_param_read(flash_param_t *flash_param) {
 
 void ICACHE_FLASH_ATTR flash_param_write(flash_param_t *flash_param) {
 	ETS_UART_INTR_DISABLE();
-	spi_flash_erase_sector(FLASH_PARAM_START_SECTOR);
+	spi_flash_erase_sector(FLASH_PARAM_SECTOR);
 	spi_flash_write(FLASH_PARAM_ADDR, (uint32 *) flash_param, sizeof(flash_param_t));
 	ETS_UART_INTR_ENABLE();
 }
@@ -29,13 +30,14 @@ flash_param_t *ICACHE_FLASH_ATTR flash_param_get(void) {
 	return &flash_param;
 }
 
-void ICACHE_FLASH_ATTR flash_param_set(void) {
+int ICACHE_FLASH_ATTR flash_param_set(void) {
 	flash_param_write(&flash_param);
 	flash_param_t tmp;
 	flash_param_read(&tmp);
 	if (memcmp(&tmp, &flash_param, sizeof(flash_param_t)) != 0) {
-		DCE_FAIL("flash_param verify failed");
+		return 0;
 	}
+	return 1;
 }
 
 void ICACHE_FLASH_ATTR flash_param_init_defaults(void) {
@@ -54,4 +56,3 @@ flash_param_t* ICACHE_FLASH_ATTR flash_param_init(void) {
 	}
 	return flash_param;
 }
-
diff --git a/user/flash_param.h b/user/flash_param.h
index 1a558b5..8354663 100644
--- a/user/flash_param.h
+++ b/user/flash_param.h
@@ -12,5 +12,6 @@ typedef struct flash_param {
 } flash_param_t;
 
 flash_param_t *flash_param_get(void);
+int flash_param_set(void);
 
 #endif /* __FLASH_PARAM_H__ */
diff --git a/user/user_main.c b/user/user_main.c
index 25a7e89..68716d9 100644
--- a/user/user_main.c
+++ b/user/user_main.c
@@ -22,6 +22,7 @@
 #include "task.h"
 
 #include "server.h"
+#include "config.h"
 #include "flash_param.h"
 
 os_event_t		recvTaskQueue[recvTaskQueueLen];
@@ -64,7 +65,9 @@ void user_init(void)
 
 
 	#ifdef CONFIG_DYNAMIC
-		flash_param_t *flash_param = flash_param_get();
+		flash_param_t *flash_param;
+		flash_param_init();
+		flash_param = flash_param_get();
 		uart_init(flash_param->baud, BIT_RATE_115200);
 	#else
 		uart_init(BIT_RATE_115200, BIT_RATE_115200);