diff --git a/Makefile b/Makefile
index 5b5c43a5..4ee9c756 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ load-passthrough:
 	cp passthrough.UF2  $(BOOT_VOLUME)
 
 load-nina:
-	esptool.py --port $(M4_PORT) --before no_reset --baud $(UPLOAD_BAUD) write_flash 0 NINA_W102-1.3.1.bin
+	esptool.py --port $(M4_PORT) --before no_reset --baud $(UPLOAD_BAUD) write_flash 0 NINA_W102-1.4.0.bin
 
 load-circuitpython:
 	cp $(CIRCUITPYTHON_UF2) $(BOOT_VOLUME)
diff --git a/README.md b/README.md
index 74eac34e..a80ee4dd 100644
--- a/README.md
+++ b/README.md
@@ -11,14 +11,16 @@ The firmware shipped in Adafruit's products is compiled following these
 instructions. These may differ from the instructions included in the
 original Arduino firmware repository.
 
-1. [Download the ESP32 toolchain](https://docs.espressif.com/projects/esp-idf/en/v3.2/get-started/index.html#setup-toolchain)
+1. [Download the ESP32 toolchain](https://docs.espressif.com/projects/esp-idf/en/v3.3/get-started/index.html#setup-toolchain)
 1. Extract it and add it to your `PATH`: `export PATH=$PATH:<path/to/toolchain>/bin`
-1. Clone **v3.2** of the IDF: `git clone --branch v3.2 --recursive https://github.com/espressif/esp-idf.git`
+1. Clone **v3.3** of the IDF: `git clone --branch v3.3 --recursive https://github.com/espressif/esp-idf.git`
 1. Set the `IDF_PATH` environment variable: `export IDF_PATH=<path/to/idf>`
 1. Run `make firmware` to build the firmware (in the directory of this read me)
 1. You should have a file named `NINA_W102-x.x.x.bin` in the top directory
 1. Use appropriate tools (esptool.py, appropriate pass-through firmware etc)
    to load this binary file onto your board.
+    a. If you do not know how to do this, [we have an excellent guide on the Adafruit Learning System for upgrading your ESP32's firmware](https://learn.adafruit.com/upgrading-esp32-firmware)
+   
 
 ## License
 
diff --git a/sdkconfig b/sdkconfig
index c0220f92..bb194535 100644
--- a/sdkconfig
+++ b/sdkconfig
@@ -2,6 +2,7 @@
 # Automatically generated file; DO NOT EDIT.
 # Espressif IoT Development Framework Configuration
 #
+CONFIG_IDF_TARGET="esp32"
 
 #
 # SDK tool configuration
@@ -10,6 +11,13 @@ CONFIG_TOOLPREFIX="xtensa-esp32-elf-"
 CONFIG_PYTHON="python"
 CONFIG_MAKE_WARN_UNDEFINED_VARIABLES=y
 
+#
+# Application manager
+#
+CONFIG_APP_COMPILE_TIME_DATE=
+CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=y
+CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
+
 #
 # Bootloader config
 #
@@ -24,9 +32,8 @@ CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_8V=
 CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V=y
 CONFIG_BOOTLOADER_FACTORY_RESET=
 CONFIG_BOOTLOADER_APP_TEST=
-CONFIG_BOOTLOADER_WDT_ENABLE=y
-CONFIG_BOOTLOADER_WDT_DISABLE_IN_USER_CODE=
-CONFIG_BOOTLOADER_WDT_TIME_MS=9000
+CONFIG_BOOTLOADER_WDT_ENABLE=
+CONFIG_APP_ROLLBACK_ENABLE=
 
 #
 # Security features
@@ -106,7 +113,7 @@ CONFIG_STACK_CHECK_STRONG=
 CONFIG_STACK_CHECK_ALL=
 CONFIG_STACK_CHECK=
 CONFIG_WARN_WRITE_STRINGS=
-CONFIG_DISABLE_GCC8_WARNINGS=
+CONFIG_DISABLE_GCC8_WARNINGS=y
 
 #
 # Component config
@@ -161,6 +168,7 @@ CONFIG_SCAN_DUPLICATE_BY_ADV_DATA_AND_DEVICE_ADDR=
 CONFIG_SCAN_DUPLICATE_TYPE=0
 CONFIG_DUPLICATE_SCAN_CACHE_SIZE=200
 CONFIG_BLE_MESH_SCAN_DUPLICATE_EN=
+CONFIG_BTDM_CONTROLLER_FULL_SCAN_SUPPORTED=
 CONFIG_BLE_ADV_REPORT_FLOW_CONTROL_SUPPORTED=y
 CONFIG_BLE_ADV_REPORT_FLOW_CONTROL_NUM=100
 CONFIG_BLE_ADV_REPORT_DISCARD_THRSHOLD=20
@@ -182,11 +190,28 @@ CONFIG_ADC2_DISABLE_DAC=y
 CONFIG_SPI_MASTER_IN_IRAM=y
 CONFIG_SPI_MASTER_ISR_IN_IRAM=y
 CONFIG_SPI_SLAVE_IN_IRAM=
-CONFIG_SPI_SLAVE_ISR_IN_IRAM=y
+CONFIG_SPI_SLAVE_ISR_IN_IRAM=
+
+#
+# eFuse Bit Manager
+#
+CONFIG_EFUSE_CUSTOM_TABLE=
+CONFIG_EFUSE_VIRTUAL=
+CONFIG_EFUSE_CODE_SCHEME_COMPAT_NONE=
+CONFIG_EFUSE_CODE_SCHEME_COMPAT_3_4=y
+CONFIG_EFUSE_CODE_SCHEME_COMPAT_REPEAT=
+CONFIG_EFUSE_MAX_BLK_LEN=192
 
 #
 # ESP32-specific
 #
+CONFIG_IDF_TARGET_ESP32=y
+CONFIG_ESP32_REV_MIN_0=y
+CONFIG_ESP32_REV_MIN_1=
+CONFIG_ESP32_REV_MIN_2=
+CONFIG_ESP32_REV_MIN_3=
+CONFIG_ESP32_REV_MIN=0
+CONFIG_ESP32_DPORT_WORKAROUND=y
 CONFIG_ESP32_DEFAULT_CPU_FREQ_80=y
 CONFIG_ESP32_DEFAULT_CPU_FREQ_160=
 CONFIG_ESP32_DEFAULT_CPU_FREQ_240=
@@ -196,10 +221,6 @@ CONFIG_MEMMAP_TRACEMEM=
 CONFIG_MEMMAP_TRACEMEM_TWOBANKS=
 CONFIG_ESP32_TRAX=
 CONFIG_TRACEMEM_RESERVE_DRAM=0x0
-CONFIG_ESP32_ENABLE_COREDUMP_TO_FLASH=
-CONFIG_ESP32_ENABLE_COREDUMP_TO_UART=
-CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE=y
-CONFIG_ESP32_ENABLE_COREDUMP=
 CONFIG_TWO_UNIVERSAL_MAC_ADDRESS=
 CONFIG_FOUR_UNIVERSAL_MAC_ADDRESS=y
 CONFIG_NUMBER_OF_UNIVERSAL_MAC_ADDRESS=4
@@ -284,6 +305,9 @@ CONFIG_ESP32_WIFI_NVS_ENABLED=y
 CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_0=y
 CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_1=
 CONFIG_ESP32_WIFI_SOFTAP_BEACON_MAX_LEN=752
+CONFIG_ESP32_WIFI_MGMT_SBUF_NUM=32
+CONFIG_ESP32_WIFI_DEBUG_LOG_ENABLE=
+CONFIG_ESP32_WIFI_IRAM_OPT=y
 
 #
 # PHY
@@ -320,6 +344,22 @@ CONFIG_ESP_HTTP_CLIENT_ENABLE_HTTPS=y
 #
 CONFIG_HTTPD_MAX_REQ_HDR_LEN=512
 CONFIG_HTTPD_MAX_URI_LEN=512
+CONFIG_HTTPD_ERR_RESP_NO_DELAY=y
+CONFIG_HTTPD_PURGE_BUF_LEN=32
+CONFIG_HTTPD_LOG_PURGE_DATA=
+
+#
+# ESP HTTPS OTA
+#
+CONFIG_OTA_ALLOW_HTTP=
+
+#
+# Core dump
+#
+CONFIG_ESP32_ENABLE_COREDUMP_TO_FLASH=
+CONFIG_ESP32_ENABLE_COREDUMP_TO_UART=
+CONFIG_ESP32_ENABLE_COREDUMP_TO_NONE=y
+CONFIG_ESP32_ENABLE_COREDUMP=
 
 #
 # Ethernet
@@ -411,6 +451,8 @@ CONFIG_FREERTOS_USE_TRACE_FACILITY=
 CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS=
 CONFIG_FREERTOS_DEBUG_INTERNALS=
 CONFIG_FREERTOS_TASK_FUNCTION_WRAPPER=y
+CONFIG_FREERTOS_CHECK_MUTEX_GIVEN_BY_OWNER=y
+CONFIG_FREERTOS_CHECK_PORT_CRITICAL_COMPLIANCE=
 
 #
 # Heap memory debugging
@@ -622,6 +664,11 @@ CONFIG_OPENSSL_ASSERT_EXIT=
 CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT=5
 CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT=3072
 CONFIG_PTHREAD_STACK_MIN=768
+CONFIG_ESP32_DEFAULT_PTHREAD_CORE_NO_AFFINITY=y
+CONFIG_ESP32_DEFAULT_PTHREAD_CORE_0=
+CONFIG_ESP32_DEFAULT_PTHREAD_CORE_1=
+CONFIG_ESP32_PTHREAD_TASK_CORE_DEFAULT=-1
+CONFIG_ESP32_PTHREAD_TASK_NAME_DEFAULT="pthread"
 
 #
 # SPI Flash driver
@@ -632,6 +679,9 @@ CONFIG_SPI_FLASH_ROM_DRIVER_PATCH=y
 CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ABORTS=y
 CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_FAILS=
 CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ALLOWED=
+CONFIG_SPI_FLASH_YIELD_DURING_ERASE=y
+CONFIG_SPI_FLASH_ERASE_YIELD_DURATION_MS=20
+CONFIG_SPI_FLASH_ERASE_YIELD_TICKS=1
 
 #
 # SPIFFS Configuration
@@ -670,6 +720,15 @@ CONFIG_SPIFFS_TEST_VISUALISATION=
 CONFIG_IP_LOST_TIMER_INTERVAL=120
 CONFIG_TCPIP_LWIP=y
 
+#
+# Unity unit testing library
+#
+CONFIG_UNITY_ENABLE_FLOAT=y
+CONFIG_UNITY_ENABLE_DOUBLE=y
+CONFIG_UNITY_ENABLE_COLOR=
+CONFIG_UNITY_ENABLE_IDF_TEST_RUNNER=y
+CONFIG_UNITY_ENABLE_FIXTURE=
+
 #
 # Virtual file system
 #
@@ -682,3 +741,8 @@ CONFIG_SUPPORT_TERMIOS=y
 CONFIG_WL_SECTOR_SIZE_512=
 CONFIG_WL_SECTOR_SIZE_4096=y
 CONFIG_WL_SECTOR_SIZE=4096
+
+#
+# Wi-Fi Provisioning Manager
+#
+CONFIG_WIFI_PROV_SCAN_MAX_ENTRIES=16