diff --git a/hardware/tools/esp8266/sdk/changelog.txt b/hardware/tools/esp8266/sdk/changelog.txt
index 47322841f..e9453c59d 100644
--- a/hardware/tools/esp8266/sdk/changelog.txt
+++ b/hardware/tools/esp8266/sdk/changelog.txt
@@ -1,3 +1,27 @@
+esp_iot_sdk_v1.0.1_b2_15_04_10 release note
+-------------------------------------------
+
+Fix bugs:
+1.Call espconn_sent to send UDP packet in user_init cause reset.[BBP#2 reporter (????)] 
+2.UART & FlowControl issue: send data to FIFO without CTS flag will cause WDT [BBP#11 reporter (pvxx)]
+3.SSL issue,add an API (espconn_secure_set_size) to set SSL buffer size [BBP#29 reporter (PeteW)]
+4.UDP broadcast issue in WEP
+
+Optimize:
+1.Add more details about measure ADC & VDD3P3 in appendix of document“2C-SDK-Espressif IoT SDK Programming Guide”[BBP#15 reporter (DarkByte)]
+2.Can not do any WiFi related operation if WiFi mode is in NULL_MODE [BBP#23 reporter (hao.wang)]
+3.start_ip and end_ip won't change through API wifi_softap_set_dhcps_lease [BBP#37 reporter (glb)]
+4.AT get into busy state [BBP#35 reporter (tommy_hk)]
+5.ssid + password length limitation when using AirKiss [BBP#45 reporter (zhchbin)]
+
+Add APIs:
+1.espconn_secure_set_size:set buffer size for SSL packet
+2.espconn_secure_get_size:get SSL buffer size
+3.at_register_uart_rx_intr:set UART0 to be used by user or AT commands
+
+Add AT command:
+1.AT+SLEEP: set ESP8266 sleep mode
+
 esp_iot_sdk_v1.0.1_b1_15_04_02 Release note
 -------------------------------------------
 
diff --git a/hardware/tools/esp8266/sdk/include/eagle_soc.h b/hardware/tools/esp8266/sdk/include/eagle_soc.h
index c46a24329..59214159e 100644
--- a/hardware/tools/esp8266/sdk/include/eagle_soc.h
+++ b/hardware/tools/esp8266/sdk/include/eagle_soc.h
@@ -244,6 +244,7 @@
 #define PERIPHS_IO_MUX_SD_DATA0_U       (PERIPHS_IO_MUX + 0x20)
 #define FUNC_SDDATA0                        0
 #define FUNC_SPIQ_MISO                      1
+#define FUNC_SPIQ                           1
 #define FUNC_GPIO7                          3
 #define FUNC_U1TXD                          4
 #define FUNC_UART1_TXD                      4
diff --git a/hardware/tools/esp8266/sdk/include/espconn.h b/hardware/tools/esp8266/sdk/include/espconn.h
index 94111c2db..b11124400 100644
--- a/hardware/tools/esp8266/sdk/include/espconn.h
+++ b/hardware/tools/esp8266/sdk/include/espconn.h
@@ -103,6 +103,14 @@ enum espconn_level{
 	ESPCONN_KEEPCNT
 };
 
+enum {
+	ESPCONN_IDLE = 0,
+	ESPCONN_CLIENT,
+	ESPCONN_SERVER,
+	ESPCONN_BOTH,
+	ESPCONN_MAX
+};
+
 /******************************************************************************
  * FunctionName : espconn_connect
  * Description  : The function given as the connect
@@ -399,6 +407,27 @@ sint8 espconn_secure_disconnect(struct espconn *espconn);
 
 sint8 espconn_secure_sent(struct espconn *espconn, uint8 *psent, uint16 length);
 
+/******************************************************************************
+ * FunctionName : espconn_secure_set_size
+ * Description  : set the buffer size for client or server
+ * Parameters   : level -- set for client or server
+ * 				  1: client,2:server,3:client and server
+ * 				  size -- buffer size
+ * Returns      : true or false
+*******************************************************************************/
+
+bool espconn_secure_set_size(uint8 level, uint16 size);
+
+/******************************************************************************
+ * FunctionName : espconn_secure_get_size
+ * Description  : get buffer size for client or server
+ * Parameters   : level -- set for client or server
+ *				  1: client,2:server,3:client and server
+ * Returns      : buffer size for client or server
+*******************************************************************************/
+
+sint16 espconn_secure_get_size(uint8 level);
+
 /******************************************************************************
  * FunctionName : espconn_secure_accept
  * Description  : The function given as the listen
diff --git a/hardware/tools/esp8266/sdk/lib/liblwip.a b/hardware/tools/esp8266/sdk/lib/liblwip.a
index 41d09216e..1cfca2841 100644
Binary files a/hardware/tools/esp8266/sdk/lib/liblwip.a and b/hardware/tools/esp8266/sdk/lib/liblwip.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libmain.a b/hardware/tools/esp8266/sdk/lib/libmain.a
index 30077f166..2b889d385 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libmain.a and b/hardware/tools/esp8266/sdk/lib/libmain.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libnet80211.a b/hardware/tools/esp8266/sdk/lib/libnet80211.a
index 02c5a7419..84faea50a 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libnet80211.a and b/hardware/tools/esp8266/sdk/lib/libnet80211.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libpp.a b/hardware/tools/esp8266/sdk/lib/libpp.a
index e1dc1ec2c..d7168ddde 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libpp.a and b/hardware/tools/esp8266/sdk/lib/libpp.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libsmartconfig.a b/hardware/tools/esp8266/sdk/lib/libsmartconfig.a
index 9b30b2136..a73493874 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libsmartconfig.a and b/hardware/tools/esp8266/sdk/lib/libsmartconfig.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libssl.a b/hardware/tools/esp8266/sdk/lib/libssl.a
index dcef7b9a0..d4660259c 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libssl.a and b/hardware/tools/esp8266/sdk/lib/libssl.a differ
diff --git a/hardware/tools/esp8266/sdk/lib/libwpa.a b/hardware/tools/esp8266/sdk/lib/libwpa.a
index 4199bd8bf..7ae259010 100644
Binary files a/hardware/tools/esp8266/sdk/lib/libwpa.a and b/hardware/tools/esp8266/sdk/lib/libwpa.a differ
diff --git a/hardware/tools/esp8266/sdk/version b/hardware/tools/esp8266/sdk/version
index afaf360d3..108c1c648 100644
--- a/hardware/tools/esp8266/sdk/version
+++ b/hardware/tools/esp8266/sdk/version
@@ -1 +1 @@
-1.0.0
\ No newline at end of file
+1.0.1_b2_15_04_10 
\ No newline at end of file