diff --git a/MicroPython_BUILD/BUILD.sh b/MicroPython_BUILD/BUILD.sh
index 166cee1..402f562 100755
--- a/MicroPython_BUILD/BUILD.sh
+++ b/MicroPython_BUILD/BUILD.sh
@@ -44,7 +44,7 @@
 
 
 #=======================
-TOOLS_VER=ver20180112.id
+TOOLS_VER=ver20180116.id
 #=======================
 
 # -----------------------------
diff --git a/MicroPython_BUILD/components/micropython/esp32/mpversion.h b/MicroPython_BUILD/components/micropython/esp32/mpversion.h
index 5760e36..78ce53a 100644
--- a/MicroPython_BUILD/components/micropython/esp32/mpversion.h
+++ b/MicroPython_BUILD/components/micropython/esp32/mpversion.h
@@ -1,8 +1,8 @@
 // MicroPython version info
-#define MICROPY_GIT_TAG "ESP32_LoBo_v3.1.4"
+#define MICROPY_GIT_TAG "ESP32_LoBo_v3.1.5"
 #define MICROPY_GIT_HASH "g2ddee729"
-#define MICROPY_BUILD_DATE "2017-01-14"
+#define MICROPY_BUILD_DATE "2017-01-16"
 #define MICROPY_VERSION_MAJOR (3)
 #define MICROPY_VERSION_MINOR (1)
-#define MICROPY_VERSION_MICRO (4)
-#define MICROPY_VERSION_STRING "3.1.4"
+#define MICROPY_VERSION_MICRO (5)
+#define MICROPY_VERSION_STRING "3.1.5"
diff --git a/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip b/MicroPython_BUILD/firmware/MicroPython_LoBo_Firmwares.zip
index 0209089..055b089 100644
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diff --git a/MicroPython_BUILD/firmware/esp32/MicroPython.bin b/MicroPython_BUILD/firmware/esp32/MicroPython.bin
index 1ed0048..c59973a 100644
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diff --git a/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32/bootloader/bootloader.bin
index 95486fb..f083185 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_ota/MicroPython.bin
index 5ffd24b..d65f457 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_ota/bootloader/bootloader.bin
index 876f366..11df918 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram/MicroPython.bin
index 3a43555..1941cce 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram/bootloader/bootloader.bin
index 8ba34a2..3e60c32 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram_all/MicroPython.bin
index 6c02f7e..ad6fce7 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram_all/bootloader/bootloader.bin
index 2cd39c2..5313130 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin b/MicroPython_BUILD/firmware/esp32_psram_ota/MicroPython.bin
index 4388f94..d6bb8c2 100644
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diff --git a/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin b/MicroPython_BUILD/firmware/esp32_psram_ota/bootloader/bootloader.bin
index d9ba6bf..e022c65 100644
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diff --git a/Tools/esp-idf.tar.xz b/Tools/esp-idf.tar.xz
index 65d71d2..b268a62 100644
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