diff --git a/tools/sdk/changelog.txt b/tools/sdk/changelog.txt
index 9f2ad6bf8..c9e1cdf11 100644
--- a/tools/sdk/changelog.txt
+++ b/tools/sdk/changelog.txt
@@ -1,3 +1,32 @@
+esp_iot_sdk_1.1.2_15_06_25_p2 Release Note 
+-------------------------------------------
+
+Here is a patch based on SDK_v1.1.2 solved problem of abnormal current during modem-sleep. 
+Please replace the lib in \esp_iot_sdk_v1.1.2\lib
+
+Sorry for the inconvenience.
+
+esp_iot_sdk_v1.1.2_15_06_24_p1.1 Release Note 
+-------------------------------------------
+
+Here is a patch for AT firmware based on SDK_v1.1.2 resolved issue that AT user parameter area was located in wrong address，it may cause WiFi configuration goes wrong.
+
+Please update to this new AT bin files and call "AT+RESTORE" to factory reset. If you call “AT+CIPUPDATE” to upgrade，please also call "AT+RESTORE" to factory reset once.
+
+“AT_bin_v0.25_1024+KB_flash_can_upgrade.zip”
+- normal AT bin，runs with boot.bin，can FOTA upgrade，need to use 1024KB flash
+
+“AT_bin_v0.25_for_512KB_flash_cannot_upgrade.zip”
+- for old version module which flash size is 512KB
+eagle.flash.bin downloads to flash 0x00000
+eagle.irom0text.bin downloads to flash 0x40000
+can not FOTA upgrade，please don‘t call “AT+CIPUPDATE”
+
+"SDK_v1.1.2_AT_patch_01.zip"
+- libs for users who need to compile their own AT firmware，replace libs in \esp_iot_sdk_v1.1.2\lib
+
+So sorry for the inconvenience.
+
 esp_iot_sdk_v1.1.2_15_06_16_p1 Release Note 
 -------------------------------------------
 Here is a patch based on SDK_v1.1.2 resolved issue that "wifi_station_scan" cause loss of wireless connectivity.
diff --git a/tools/sdk/lib/libmain.a b/tools/sdk/lib/libmain.a
index 14af9b0bc..7c94b6300 100644
Binary files a/tools/sdk/lib/libmain.a and b/tools/sdk/lib/libmain.a differ
diff --git a/tools/sdk/lib/libnet80211.a b/tools/sdk/lib/libnet80211.a
index 14a1d09d3..a2c857125 100644
Binary files a/tools/sdk/lib/libnet80211.a and b/tools/sdk/lib/libnet80211.a differ
diff --git a/tools/sdk/lib/libpp.a b/tools/sdk/lib/libpp.a
index 9238f6c53..878240bae 100644
Binary files a/tools/sdk/lib/libpp.a and b/tools/sdk/lib/libpp.a differ
diff --git a/tools/sdk/version b/tools/sdk/version
index d3b2eb935..2fc5436a9 100644
--- a/tools/sdk/version
+++ b/tools/sdk/version
@@ -1 +1 @@
-1.1.2_15_06_16_p1
\ No newline at end of file
+1.1.2_15_06_25_p2
\ No newline at end of file