diff --git a/portable/GCC/ARM_CM3/port.c b/portable/GCC/ARM_CM3/port.c
old mode 100755
new mode 100644
diff --git a/portable/GCC/ARM_CM3_MPU/port.c b/portable/GCC/ARM_CM3_MPU/port.c
old mode 100755
new mode 100644
index d29b31d74f5..844b2ce1f53
--- a/portable/GCC/ARM_CM3_MPU/port.c
+++ b/portable/GCC/ARM_CM3_MPU/port.c
@@ -736,8 +736,8 @@ static void prvRestoreContextOfFirstTask( void )
         " str r3, [r0]                          \n" /* Disable MPU. */
         "                                       \n"
         " ldr r0, =0xe000ed9c                   \n" /* Region Base Address register. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
         "                                       \n"
         " ldr r0, =0xe000ed94                   \n" /* MPU_CTRL register. */
         " ldr r3, [r0]                          \n" /* Read the value of MPU_CTRL. */
@@ -1011,8 +1011,8 @@ void xPortPendSVHandler( void )
         " str r3, [r0]                          \n" /* Disable MPU. */
         "                                       \n"
         " ldr r0, =0xe000ed9c                   \n" /* Region Base Address register. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
         "                                       \n"
         " ldr r0, =0xe000ed94                   \n" /* MPU_CTRL register. */
         " ldr r3, [r0]                          \n" /* Read the value of MPU_CTRL. */
diff --git a/portable/GCC/ARM_CM4F/port.c b/portable/GCC/ARM_CM4F/port.c
old mode 100755
new mode 100644
diff --git a/portable/GCC/ARM_CM4_MPU/port.c b/portable/GCC/ARM_CM4_MPU/port.c
old mode 100755
new mode 100644
index bbcf733b89c..548187db351
--- a/portable/GCC/ARM_CM4_MPU/port.c
+++ b/portable/GCC/ARM_CM4_MPU/port.c
@@ -818,14 +818,14 @@ static void prvRestoreContextOfFirstTask( void )
         " str r3, [r0]                          \n" /* Disable MPU. */
         "                                       \n"
         " ldr r0, =0xe000ed9c                   \n" /* Region Base Address register. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
         "                                       \n"
     #if ( configTOTAL_MPU_REGIONS == 16 )
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 8]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 4 - 8]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 9 - 12]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 9 - 12]. */
     #endif /* configTOTAL_MPU_REGIONS == 16. */
         "                                       \n"
         " ldr r0, =0xe000ed94                   \n" /* MPU_CTRL register. */
@@ -1137,14 +1137,14 @@ void xPortPendSVHandler( void )
         " str r3, [r0]                          \n" /* Disable MPU. */
         "                                       \n"
         " ldr r0, =0xe000ed9c                   \n" /* Region Base Address register. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
         "                                       \n"
     #if ( configTOTAL_MPU_REGIONS == 16 )
+        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 4 - 7]. */
         " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
         " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-        " ldmia r2!, {r4-r11}                   \n" /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-        " stmia r0, {r4-r11}                    \n" /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
     #endif /* configTOTAL_MPU_REGIONS == 16. */
         "                                       \n"
         " ldr r0, =0xe000ed94                   \n" /* MPU_CTRL register. */
diff --git a/portable/IAR/ARM_CM4F_MPU/portasm.s b/portable/IAR/ARM_CM4F_MPU/portasm.s
index 3cbe5e0f5ed..a0cf8baa2f4 100644
--- a/portable/IAR/ARM_CM4F_MPU/portasm.s
+++ b/portable/IAR/ARM_CM4F_MPU/portasm.s
@@ -114,15 +114,15 @@ xPortPendSVHandler:
     str r3, [r0]                           /* Disable MPU. */
 
     ldr r0, =0xe000ed9c                    /* Region Base Address register. */
-    ldmia r2!, {r4-r11}                    /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-    stmia r0, {r4-r11}                     /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+    ldmia r2!, {r4-r11}                    /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+    stmia r0, {r4-r11}                     /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
 
 #ifdef configTOTAL_MPU_REGIONS
     #if ( configTOTAL_MPU_REGIONS == 16 )
+        ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 4 - 7]. */
         ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
         stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-        ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-        stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
     #endif /* configTOTAL_MPU_REGIONS == 16. */
 #endif
 
@@ -240,15 +240,15 @@ vPortRestoreContextOfFirstTask:
     str r3, [r0]                           /* Disable MPU. */
 
     ldr r0, =0xe000ed9c                    /* Region Base Address register. */
-    ldmia r2!, {r4-r11}                    /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-    stmia r0, {r4-r11}                     /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+    ldmia r2!, {r4-r11}                    /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+    stmia r0, {r4-r11}                     /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
 
 #ifdef configTOTAL_MPU_REGIONS
     #if ( configTOTAL_MPU_REGIONS == 16 )
+        ldmia r2!, {r4-r11}                /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        stmia r0, {r4-r11}                 /* Write 4 sets of MPU registers. [MPU Region # 4 - 7]. */
         ldmia r2!, {r4-r11}                /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
         stmia r0, {r4-r11}                 /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-        ldmia r2!, {r4-r11}                /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-        stmia r0, {r4-r11}                 /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
     #endif /* configTOTAL_MPU_REGIONS == 16. */
 #endif
 
diff --git a/portable/RVDS/ARM_CM4_MPU/port.c b/portable/RVDS/ARM_CM4_MPU/port.c
index beb52ea22ed..7bcf6bc8813 100755
--- a/portable/RVDS/ARM_CM4_MPU/port.c
+++ b/portable/RVDS/ARM_CM4_MPU/port.c
@@ -796,14 +796,14 @@ __asm void prvRestoreContextOfFirstTask( void )
     str r3, [r0]                /* Disable MPU. */
 
     ldr r0, =0xe000ed9c         /* Region Base Address register. */
-    ldmia r2!, {r4-r11}         /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-    stmia r0, {r4-r11}          /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+    ldmia r2!, {r4-r11}         /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+    stmia r0, {r4-r11}          /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
 
     #if ( configTOTAL_MPU_REGIONS == 16 )
+        ldmia r2!, {r4-r11}     /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
+        stmia r0, {r4-r11}      /* Write 4 sets of MPU registers. [MPU Region # 4 - 7]. */
         ldmia r2!, {r4-r11}     /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
         stmia r0, {r4-r11}      /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-        ldmia r2!, {r4-r11}     /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-        stmia r0, {r4-r11}      /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
     #endif /* configTOTAL_MPU_REGIONS == 16. */
 
     ldr r0, =0xe000ed94         /* MPU_CTRL register. */
@@ -1132,14 +1132,14 @@ __asm void xPortPendSVHandler( void )
     str r3, [r0]                        /* Disable MPU. */
 
     ldr r0, =0xe000ed9c                 /* Region Base Address register. */
-    ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
-    stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers [MPU Region # 4 - 7]. */
+    ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 0 - 3]. */
+    stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers [MPU Region # 0 - 3]. */
 
 #if ( configTOTAL_MPU_REGIONS == 16 )
+    ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 4 - 7]. */
+    stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 4 - 7]. */
     ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 8 - 11]. */
     stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 8 - 11]. */
-    ldmia r2!, {r4-r11}                 /* Read 4 sets of MPU registers [MPU Region # 12 - 15]. */
-    stmia r0, {r4-r11}                  /* Write 4 sets of MPU registers. [MPU Region # 12 - 15]. */
 #endif /* configTOTAL_MPU_REGIONS == 16. */
 
     ldr r0, =0xe000ed94                 /* MPU_CTRL register. */