diff --git a/hal/inc/hal_platform.h b/hal/inc/hal_platform.h
index 58f32764b5..f09dc78233 100644
--- a/hal/inc/hal_platform.h
+++ b/hal/inc/hal_platform.h
@@ -142,6 +142,10 @@
 #define HAL_PLATFORM_NCP_UPDATABLE (0)
 #endif /* HAL_PLATFORM_NCP_UPDATABLE */
 
+#ifndef HAL_PLATFORM_NCP_UPDATES_DISABLED
+#define HAL_PLATFORM_NCP_UPDATES_DISABLED (0)
+#endif /* HAL_PLATFORM_NCP_UPDATES_DISABLED */
+
 #ifndef HAL_PLATFORM_MCU_ANY
 #define HAL_PLATFORM_MCU_ANY (0xFF)
 #endif // HAL_PLATFORM_MCU_ANY
diff --git a/hal/network/ncp/wifi/platform_ncp_update.cpp b/hal/network/ncp/wifi/platform_ncp_update.cpp
index 472590999e..1b59900e71 100644
--- a/hal/network/ncp/wifi/platform_ncp_update.cpp
+++ b/hal/network/ncp/wifi/platform_ncp_update.cpp
@@ -124,6 +124,7 @@ int getWifiNcpFirmwareVersion(uint16_t* ncpVersion) {
 } // anonymous
 
 int platform_ncp_update_module(const hal_module_t* module) {
+#if !HAL_PLATFORM_NCP_UPDATES_DISABLED
     const auto ncpClient = particle::wifiNetworkManager()->ncpClient();
     SPARK_ASSERT(ncpClient);
     OtaUpdateSourceStream::ReadStreamFunc readCallback;
@@ -156,6 +157,9 @@ int platform_ncp_update_module(const hal_module_t* module) {
         LOG(INFO, "ESP32 firmware version updated to version %d", version);
     }
     return HAL_UPDATE_APPLIED;
+#else
+    return SYSTEM_ERROR_NOT_SUPPORTED;
+#endif // !HAL_PLATFORM_NCP_UPDATES_DISABLED
 }
 
 int platform_ncp_fetch_module_info(hal_module_t* module) {
diff --git a/hal/network/ncp_client/esp32/esp32_ncp_client.cpp b/hal/network/ncp_client/esp32/esp32_ncp_client.cpp
index 91b4761cda..55ebd48030 100644
--- a/hal/network/ncp_client/esp32/esp32_ncp_client.cpp
+++ b/hal/network/ncp_client/esp32/esp32_ncp_client.cpp
@@ -296,6 +296,7 @@ int Esp32NcpClient::getFirmwareModuleVersionImpl(uint16_t* ver) {
 }
 
 int Esp32NcpClient::updateFirmware(InputStream* file, size_t size) {
+#if !HAL_PLATFORM_NCP_UPDATES_DISABLED
     const NcpClientLock lock(this);
     CHECK(checkParser());
     auto resp = parser_.sendCommand("AT+FWUPD=%u", (unsigned)size);
@@ -351,6 +352,9 @@ int Esp32NcpClient::updateFirmware(InputStream* file, size_t size) {
     off();
     CHECK(on());
     return 0;
+#else
+    return SYSTEM_ERROR_NOT_SUPPORTED;
+#endif // !HAL_PLATFORM_NCP_UPDATES_DISABLED
 }
 
 void Esp32NcpClient::processEvents() {
diff --git a/hal/network/ncp_client/sara/sara_ncp_client.cpp b/hal/network/ncp_client/sara/sara_ncp_client.cpp
index 56a3545353..bed3f0b728 100644
--- a/hal/network/ncp_client/sara/sara_ncp_client.cpp
+++ b/hal/network/ncp_client/sara/sara_ncp_client.cpp
@@ -1999,7 +1999,11 @@ int SaraNcpClient::configureApn(const CellularNetworkConfig& conf) {
         CHECK_PARSER_OK(setModuleFunctionality(CellularFunctionality::AIRPLANE));
         auto resp = parser_.sendCommand("AT+CGDCONT=%d,\"%s\",\"%s%s\"",
                 UBLOX_DEFAULT_CID, UBLOX_DEFAULT_PDP_TYPE,
+#if CHAP_SUPPORT
                 (netConf_.hasUser() && netConf_.hasPassword()) ? "CHAP:" : "",
+#else
+                "",
+#endif // CHAP_SUPPORT
                 netConf_.hasApn() ? netConf_.apn() : "");
         const int r = CHECK_PARSER(resp.readResult());
         CHECK_TRUE(r == AtResponse::OK, SYSTEM_ERROR_AT_NOT_OK);
diff --git a/hal/src/nRF52840/hal_platform_nrf52840_config.h b/hal/src/nRF52840/hal_platform_nrf52840_config.h
index 0922dbb11e..2a36b7d766 100644
--- a/hal/src/nRF52840/hal_platform_nrf52840_config.h
+++ b/hal/src/nRF52840/hal_platform_nrf52840_config.h
@@ -105,7 +105,7 @@
 #define HAL_PLATFORM_RESUMABLE_OTA (1)
 
 #ifndef HAL_PLATFORM_ERROR_MESSAGES
-#define HAL_PLATFORM_ERROR_MESSAGES (1)
+#define HAL_PLATFORM_ERROR_MESSAGES (0)
 #endif // HAL_PLATFORM_ERROR_MESSAGES
 
 #define HAL_PLATFORM_PROHIBIT_XIP (1)
diff --git a/hal/src/nRF52840/lwip/lwipopts.h b/hal/src/nRF52840/lwip/lwipopts.h
index 3f91c22e04..bd50666ff7 100644
--- a/hal/src/nRF52840/lwip/lwipopts.h
+++ b/hal/src/nRF52840/lwip/lwipopts.h
@@ -451,14 +451,14 @@ void sys_unlock_tcpip_core(void);
  * this option does not affect outgoing packet sizes, which can be controlled
  * via IP_FRAG.
  */
-#define IP_REASSEMBLY                   1
+#define IP_REASSEMBLY                   (PLATFORM_ID != PLATFORM_TRACKER)
 
 /**
  * IP_FRAG==1: Fragment outgoing IP packets if their size exceeds MTU. Note
  * that this option does not affect incoming packet sizes, which can be
  * controlled via IP_REASSEMBLY.
  */
-#define IP_FRAG                         1
+#define IP_FRAG                         (PLATFORM_ID != PLATFORM_TRACKER)
 
 /**
  * IP_OPTIONS_ALLOWED: Defines the behavior for IP options.
@@ -1635,11 +1635,11 @@ void sys_unlock_tcpip_core(void);
 /**
  * LWIP_IPV6==1: Enable IPv6
  */
-#if PLATFORM_ID != PLATFORM_TRACKER
-#define LWIP_IPV6                       1
-#else
+// #if PLATFORM_ID != PLATFORM_TRACKER
+// #define LWIP_IPV6                       1
+// #else
 #define LWIP_IPV6_DEFINES_ONLY          1
-#endif // PLATFORM_ID != PLATFORM_TRACKER
+// #endif // PLATFORM_ID != PLATFORM_TRACKER
 
 /**
  * IPV6_REASS_MAXAGE: Maximum time (in multiples of IP6_REASS_TMR_INTERVAL - so seconds, normally)
diff --git a/hal/src/nRF52840/lwip/lwippppopts.h b/hal/src/nRF52840/lwip/lwippppopts.h
index 404cc432be..df8add6b22 100644
--- a/hal/src/nRF52840/lwip/lwippppopts.h
+++ b/hal/src/nRF52840/lwip/lwippppopts.h
@@ -176,7 +176,7 @@
 /**
  * CHAP_SUPPORT==1: Support CHAP.
  */
-#define CHAP_SUPPORT                    (PLATFORM_ID != PLATFORM_TRACKER)
+#define CHAP_SUPPORT                    0
 
 /**
  * MSCHAP_SUPPORT==1: Support MSCHAP.
@@ -294,7 +294,7 @@
 /**
  * LWIP_USE_EXTERNAL_MBEDTLS: Use external mbed TLS library
  */
-#define LWIP_USE_EXTERNAL_MBEDTLS       0
+#define LWIP_USE_EXTERNAL_MBEDTLS       1
 
 /*
  * PPP Timeouts
diff --git a/hal/src/nRF52840/mbedtls/mbedtls_config_platform.h b/hal/src/nRF52840/mbedtls/mbedtls_config_platform.h
index 5aa9a9ebbc..6e1d9dee1c 100644
--- a/hal/src/nRF52840/mbedtls/mbedtls_config_platform.h
+++ b/hal/src/nRF52840/mbedtls/mbedtls_config_platform.h
@@ -2352,7 +2352,7 @@
  *
  * This module is required for SSL/TLS server support.
  */
-#define MBEDTLS_SSL_SRV_C
+//#define MBEDTLS_SSL_SRV_C
 
 /**
  * \def MBEDTLS_SSL_TLS_C
diff --git a/hal/src/tracker/hal_platform_config.h b/hal/src/tracker/hal_platform_config.h
index 5e92fe3c59..ed75b266e6 100644
--- a/hal/src/tracker/hal_platform_config.h
+++ b/hal/src/tracker/hal_platform_config.h
@@ -16,6 +16,7 @@
 #define HAL_PLATFORM_I2C_BUFFER_SIZE(x) (x == HAL_I2C_INTERFACE2 ? 512 : HAL_PLATFORM_I2C_BUFFER_SIZE_DEFAULT)
 #define HAL_PLATFORM_USART_NUM (2)
 #define HAL_PLATFORM_NCP_UPDATABLE (1)
+#define HAL_PLATFORM_NCP_UPDATES_DISABLED (1)
 #define HAL_PLATFORM_ESP32_NCP (1)
 
 #define HAL_PLATFORM_PMIC_BQ24195 (1)
diff --git a/modules/shared/nRF52840/part1_build.mk b/modules/shared/nRF52840/part1_build.mk
index dc725bdc42..179eab8bc3 100644
--- a/modules/shared/nRF52840/part1_build.mk
+++ b/modules/shared/nRF52840/part1_build.mk
@@ -59,6 +59,9 @@ endif
 
 LDFLAGS += -u uxTopUsedPriority -Wl,--wrap=InitSwHash512 -Wl,--wrap=ProcessSwHash512 -Wl,--wrap=FinishSwHash512
 
+# Disable float support in wiring Print
+GLOBAL_DEFINES += PARTICLE_WIRING_PRINT_NO_FLOAT
+
 INCLUDE_DIRS += $(SHARED_MODULAR)/inc/system-part1
 SYSTEM_PART1_MODULE_SRC_PATH = $(SYSTEM_PART1_MODULE_PATH)/src
 
diff --git a/modules/shared/system_module_version.mk b/modules/shared/system_module_version.mk
index ce05fa7e27..063181959a 100644
--- a/modules/shared/system_module_version.mk
+++ b/modules/shared/system_module_version.mk
@@ -67,8 +67,12 @@ endif
 else
 # There is no need to carry SoftDevice dependency on Tracker, since they are manufactured
 # with the latest one. Update NCP firmware instead.
-ESP32_NCP_DEPENDENCY = 7
-SYSTEM_PART1_MODULE_DEPENDENCY2 ?= ${MODULE_FUNCTION_NCP_FIRMWARE},0,${ESP32_NCP_DEPENDENCY}
+
+# Since 5.6.0 NCP updates are disabled. Device should be above 3.0.0-alpha.2 (3001)
+# to already have latest ESP32 NCP firmware.
+# ESP32_NCP_DEPENDENCY = 7
+# SYSTEM_PART1_MODULE_DEPENDENCY2 ?= ${MODULE_FUNCTION_NCP_FIRMWARE},0,${ESP32_NCP_DEPENDENCY}
+SYSTEM_PART1_MODULE_DEPENDENCY2 ?= ${MODULE_FUNCTION_SYSTEM_PART},1,3001
 endif
 endif
 endif # ($(PLATFORM_MCU),nRF52840)
diff --git a/third_party/lwip/lwip b/third_party/lwip/lwip
index 1001b17868..653a56a023 160000
--- a/third_party/lwip/lwip
+++ b/third_party/lwip/lwip
@@ -1 +1 @@
-Subproject commit 1001b17868a17cf0d594e069c172794cf0c1416a
+Subproject commit 653a56a02379c7b138f8fb7bd3ff55df15bd9fd0
diff --git a/wiring/inc/spark_wiring_print.h b/wiring/inc/spark_wiring_print.h
index ef07b6e179..7884a3af4b 100644
--- a/wiring/inc/spark_wiring_print.h
+++ b/wiring/inc/spark_wiring_print.h
@@ -59,7 +59,9 @@ class Print
 
     size_t printNumber(unsigned long, uint8_t);
     size_t printNumber(unsigned long long, uint8_t);
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
     size_t printFloat(double, uint8_t);
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
   protected:
     void setWriteError(int err = 1) { write_error = err; }
 
@@ -82,8 +84,11 @@ class Print
     template <typename T, std::enable_if_t<!std::is_base_of<Printable, T>::value && (std::is_integral<T>::value || std::is_convertible<T, unsigned long long>::value ||
         std::is_convertible<T, long long>::value), int> = 0>
     size_t print(T, int = DEC);
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
     size_t print(float, int = 2);
     size_t print(double, int = 2);
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
+
     size_t print(const Printable&);
     size_t print(const __FlashStringHelper*);
 
@@ -96,8 +101,10 @@ class Print
         n += println();
         return n;
     }
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
     size_t println(float, int = 2);
     size_t println(double, int = 2);
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
     size_t println(const Printable&);
     size_t println(void);
     size_t println(const __FlashStringHelper*);
diff --git a/wiring/src/spark_wiring_print.cpp b/wiring/src/spark_wiring_print.cpp
index 7b83c94aef..fe47a07738 100644
--- a/wiring/src/spark_wiring_print.cpp
+++ b/wiring/src/spark_wiring_print.cpp
@@ -60,6 +60,7 @@ size_t Print::print(char c)
   return write(c);
 }
 
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
 size_t Print::print(float n, int digits)
 {
   return printFloat((double)n, digits);
@@ -69,6 +70,7 @@ size_t Print::print(double n, int digits)
 {
   return printFloat(n, digits);
 }
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
 
  size_t Print::print(const Printable& x)
  {
@@ -101,6 +103,7 @@ size_t Print::println(char c)
   return n;
 }
 
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
 size_t Print::println(float num, int digits)
 {
     return println((double)num, digits);
@@ -112,6 +115,7 @@ size_t Print::println(double num, int digits)
   n += println();
   return n;
 }
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
 
  size_t Print::println(const Printable& x)
  {
@@ -166,6 +170,7 @@ size_t Print::printNumber(unsigned long n, uint8_t base) {
   return write(str);
 }
 
+#ifndef PARTICLE_WIRING_PRINT_NO_FLOAT
 size_t Print::printFloat(double number, uint8_t digits)
 {
   size_t n = 0;
@@ -210,6 +215,7 @@ size_t Print::printFloat(double number, uint8_t digits)
 
   return n;
 }
+#endif // PARTICLE_WIRING_PRINT_NO_FLOAT
 
 size_t Print::vprintf(bool newline, const char* format, va_list args)
 {