diff --git a/components/lwip/port/esp8266/freertos/heap.c b/components/lwip/port/esp8266/freertos/heap.c
deleted file mode 100644
index 5d14dd74..00000000
--- a/components/lwip/port/esp8266/freertos/heap.c
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <stddef.h>
-#include "lwip/opt.h"
-#include "lwip/memp.h"
-#include "FreeRTOS.h"
-#include "esp8266/eagle_soc.h"
-
-#ifdef ESP_LWIP
-#if MEMP_SIZE != 0
-#error "MEMP_SIZE must be 0"
-#else /* MEMP_SIZE != 0 */
-size_t memp_malloc_get_size(size_t type)
-{
-    return memp_pools[type]->size;
-}
-#endif /* MEMP_SIZE != 0 */
-#endif /* ESP_LWIP */
diff --git a/components/lwip/port/esp8266/freertos/sys_arch.c b/components/lwip/port/esp8266/freertos/sys_arch.c
index f68908dc..621e1f37 100644
--- a/components/lwip/port/esp8266/freertos/sys_arch.c
+++ b/components/lwip/port/esp8266/freertos/sys_arch.c
@@ -196,11 +196,6 @@ sys_mbox_new(sys_mbox_t *mbox, int size)
 void
 sys_mbox_free(sys_mbox_t *mbox)
 {
-    if (uxQueueMessagesWaiting(*mbox)) {
-        /* Line for breakpoint.  Should never break here! */
-//		__asm volatile ( "NOP" );
-    }
-
     vQueueDelete(*mbox);
 }
 
@@ -396,50 +391,6 @@ char *sys_current_task_name(void)
     return pcTaskGetTaskName(xTaskGetCurrentTaskHandle());
 }
 
-/*
-  This optional function does a "fast" critical region protection and returns
-  the previous protection level. This function is only called during very short
-  critical regions. An embedded system which supports ISR-based drivers might
-  want to implement this function by disabling interrupts. Task-based systems
-  might want to implement this by using a mutex or disabling tasking. This
-  function should support recursive calls from the same task or interrupt. In
-  other words, sys_arch_protect() could be called while already protected. In
-  that case the return value indicates that it is already protected.
-
-  sys_arch_protect() is only required if your port is supporting an operating
-  system.
-*/
-sys_prot_t
-sys_arch_protect(void)
-{
-    vPortEnterCritical();
-    return (sys_prot_t) 1;
-}
-
-/*
-  This optional function does a "fast" set of critical region protection to the
-  value specified by pval. See the documentation for sys_arch_protect() for
-  more information. This function is only required if your port is supporting
-  an operating system.
-*/
-void
-sys_arch_unprotect(sys_prot_t pval)
-{
-    (void) pval;
-    vPortExitCritical();
-}
-
-/*
- * Prints an assertion messages and aborts execution.
- */
-void
-sys_arch_assert(const char *file, int line)
-{
-    printf("\nAssertion: %d in %s\n", line, file);
-
-    while(1);
-}
-
 void
 sys_arch_msleep(int ms)
 {
diff --git a/components/lwip/port/esp8266/include/arch/cc.h b/components/lwip/port/esp8266/include/arch/cc.h
index c815a670..3d405ab9 100644
--- a/components/lwip/port/esp8266/include/arch/cc.h
+++ b/components/lwip/port/esp8266/include/arch/cc.h
@@ -61,12 +61,11 @@ typedef int sys_prot_t;
 #define PACK_STRUCT_END
 
 #include <stdio.h>
+#include <assert.h>
 
 #ifdef LWIP_DEBUG
-extern void sys_arch_assert(const char *file, int line);
-
 #define LWIP_PLATFORM_DIAG(x)   do {printf x;} while(0)
-#define LWIP_PLATFORM_ASSERT(x) do {printf(x); sys_arch_assert(__ESP_FILE__, __LINE__);} while(0)
+#define LWIP_PLATFORM_ASSERT(x) do {printf(x); assert(0);} while(0)
 #else
 #define LWIP_PLATFORM_DIAG(x)
 #define LWIP_PLATFORM_ASSERT(x)
diff --git a/components/lwip/port/esp8266/include/lwipopts.h b/components/lwip/port/esp8266/include/lwipopts.h
index 00c9fdd6..be7728a5 100644
--- a/components/lwip/port/esp8266/include/lwipopts.h
+++ b/components/lwip/port/esp8266/include/lwipopts.h
@@ -49,6 +49,7 @@
 #include <stdbool.h>
 #include "esp_libc.h"
 #include "esp_system.h"
+#include "driver/soc.h"
 
 #define ESP_LWIP 1
 
@@ -76,6 +77,13 @@
 
 #define TCP_HIGH_SPEED_RETRANSMISSION CONFIG_TCP_HIGH_SPEED_RETRANSMISSION
 
+/**
+ * @brief System
+ */
+#define SYS_ARCH_DECL_PROTECT(_lev)    esp_irqflag_t _lev
+#define SYS_ARCH_PROTECT(_lev)         _lev = soc_save_local_irq()
+#define SYS_ARCH_UNPROTECT(_lev)       soc_restore_local_irq(_lev)
+
  /*
    ------------------------------------
    -------------- NO SYS --------------
@@ -237,7 +245,7 @@ size_t memp_malloc_get_size(size_t type);
  * 
  * @return memory pool pointer
  */
-#define memp_malloc_ll(type)     heap_caps_malloc(memp_malloc_get_size(type), MALLOC_CAP_8BIT)
+#define memp_malloc_ll(type)     heap_caps_malloc(memp_pools[type]->size, MALLOC_CAP_8BIT)
 #endif
 
 /**