diff --git a/arch.mk b/arch.mk
index 7c0335c5..61ffb9dd 100644
--- a/arch.mk
+++ b/arch.mk
@@ -687,6 +687,12 @@ ifeq ($(TARGET),mcxw)
       $(MCUXPRESSO_DRIVERS)/drivers/fsl_romapi.o
 endif
 
+ifeq ($(TARGET),nrf5340_net)
+  # Net core doesn't support DSP and FP
+  CFLAGS+=-mcpu=cortex-m33+nodsp+nofp
+  LDFLAGS+=-mcpu=cortex-m33+nodsp+nofp
+endif
+
 ifeq ($(TARGET),imx_rt)
   CFLAGS+=\
       -I$(MCUXPRESSO_DRIVERS) \
diff --git a/config/examples/nrf5340.config b/config/examples/nrf5340.config
index 83be6bda..2b463d97 100644
--- a/config/examples/nrf5340.config
+++ b/config/examples/nrf5340.config
@@ -26,8 +26,8 @@ QSPI_FLASH?=1
 # Flash is 4KB pages (app)
 WOLFBOOT_SECTOR_SIZE?=0x1000
 
-# Application offset (reserve 48KB for wolfBoot)
-WOLFBOOT_PARTITION_BOOT_ADDRESS?=0xC000
+# Application offset (reserve 64KB for wolfBoot)
+WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x10000
 
 # Application Partition Size (952KB)
 WOLFBOOT_PARTITION_SIZE?=0xEE000
diff --git a/config/examples/nrf5340_net.config b/config/examples/nrf5340_net.config
index bc18a076..31964ed4 100644
--- a/config/examples/nrf5340_net.config
+++ b/config/examples/nrf5340_net.config
@@ -30,8 +30,8 @@ ARCH_FLASH_OFFSET=0x01000000
 # Flash is 2KB pages
 WOLFBOOT_SECTOR_SIZE?=0x800
 
-# Application offset (reserve 48KB for wolfBoot)
-WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x0100C000
+# Application offset (reserve 64KB for wolfBoot)
+WOLFBOOT_PARTITION_BOOT_ADDRESS?=0x01010000
 
 # Application Partition Size (184KB)
 WOLFBOOT_PARTITION_SIZE?=0x2E000
diff --git a/docs/Targets.md b/docs/Targets.md
index ba832580..12e4f7c5 100644
--- a/docs/Targets.md
+++ b/docs/Targets.md
@@ -2735,14 +2735,22 @@ Debugging with JLink:
 
 1) Start GDB Server:
 ```
+# To debug the app core:
 JLinkGDBServer -device nRF5340_xxAA_APP -if SWD -port 3333
+# To debug the net core:
+JLinkGDBServer -device nRF5340_xxAA_NET -if SWD -port 3334
 ```
 
 2) Start GDB
-This will use .gdbinit, but can supply `wolfboot.elf -ex "target remote localhost:3333"` if permissions not allowing.
 
 ```
-arm-none-eabi-gdb
+cd tools/scripts/nrf5340
+
+# To debug the app core:
+arm-none-eabi-gdb -x app.gdbinit
+# To debug the net core:
+arm-none-eabi-gdb -x net.gdbinit
+
 b main
 mon reset
 c
diff --git a/hal/nrf5340.c b/hal/nrf5340.c
index 60e231a6..4d42e2f6 100644
--- a/hal/nrf5340.c
+++ b/hal/nrf5340.c
@@ -340,6 +340,14 @@ void ext_flash_unlock(void)
 }
 #endif /* TARGET_nrf5340_net */
 
+static void hal_handle_approtect(void) {
+#ifdef DEBUG_SYMBOLS
+    /* Needed to allow debugger access */
+    CTRLAP_APPROTECT_DISABLE = 0x50FA50FA;
+    CTRLAP_SECUREAPPROTECT_DISABLE = 0x50FA50FA;
+#endif
+}
+
 static void clock_init(void)
 {
 #ifdef TARGET_nrf5340_app
@@ -692,6 +700,8 @@ void hal_init(void)
 
     clock_init();
 
+    hal_handle_approtect();
+
 #ifdef DEBUG_UART
     uart_init();
     #ifdef __WOLFBOOT
diff --git a/hal/nrf5340.h b/hal/nrf5340.h
index 0098e29c..397cd250 100644
--- a/hal/nrf5340.h
+++ b/hal/nrf5340.h
@@ -113,10 +113,27 @@ void sleep_us(uint32_t usec);
     #define SPU_FLASHREGION_PERM_LOCK    (1 << 8) /* The content of this register can't be changed until the next reset */
 #endif
 
-/* OTP */
-#define UICR_BASE (0x00FF8000UL)
+/* UICR */
+#ifdef TARGET_nrf5340_app
+    #define UICR_BASE (0x00FF8000UL)
+#else
+    #define UICR_BASE (0x01FF8000UL)
+#endif
 #define UICR_USER (UICR_BASE)
-#define UICR_OTP  (UICR_BASE + 0x100)
+#define UICR_APPROTECT       (*(volatile uint32_t *)(UICR_BASE + 0x000))
+#define UICR_SECUREAPPROTECT (*(volatile uint32_t *)(UICR_BASE + 0x01C))
+#define UICR_OTP             (UICR_BASE + 0x100)
+
+/* CTRLAP */
+#ifdef TARGET_nrf5340_app
+    #define CTRLAP_BASE (0x50006000)
+#else
+    #define CTRLAP_BASE (0x41006000)
+#endif
+#define CTRLAP_APPROTECT_LOCK          (*(volatile uint32_t *)(CTRLAP_BASE 0x540))
+#define CTRLAP_APPROTECT_DISABLE       (*(volatile uint32_t *)(CTRLAP_BASE 0x544))
+#define CTRLAP_SECUREAPPROTECT_LOCK    (*(volatile uint32_t *)(CTRLAP_BASE 0x548))
+#define CTRLAP_SECUREAPPROTECT_DISABLE (*(volatile uint32_t *)(CTRLAP_BASE 0x54C))
 
 /* Reset */
 #ifdef TARGET_nrf5340_app
diff --git a/test-app/Makefile b/test-app/Makefile
index 4e167b4c..cbe3fb89 100644
--- a/test-app/Makefile
+++ b/test-app/Makefile
@@ -235,7 +235,8 @@ ifeq ($(TARGET),stm32u5)
 endif
 
 ifeq ($(TARGET),nrf5340_net)
-  APP_OBJS:=app_$(TARGET).o ../test-app/libwolfboot.o
+  CFLAGS+=-mcpu=cortex-m33+nodsp+nofp
+  LDFLAGS+=-mcpu=cortex-m33+nodsp+nofp
   LSCRIPT_TEMPLATE=ARM-nrf5340_net.ld
 endif
 
diff --git a/tools/scripts/nrf5340/app.gdbinit b/tools/scripts/nrf5340/app.gdbinit
new file mode 100644
index 00000000..e1052125
--- /dev/null
+++ b/tools/scripts/nrf5340/app.gdbinit
@@ -0,0 +1,7 @@
+file wolfboot_app.elf
+tar rem:3333
+add-symbol-file image_app.elf
+set pagination off
+foc c
+
+
diff --git a/tools/scripts/nrf5340/build_flash.sh b/tools/scripts/nrf5340/build_flash.sh
index 26bc9857..b5731bed 100755
--- a/tools/scripts/nrf5340/build_flash.sh
+++ b/tools/scripts/nrf5340/build_flash.sh
@@ -15,8 +15,9 @@
 # Build dela update version 3 and flash to external (also reprograms internal flash)
 # ./tools/scripts/nrf5340/build_flash.sh --delta
 
-#import config for IMAGE_HEADER_SIZE and WOLFBOOT_SECTOR_SIZE
-. config/examples/nrf5340.config
+#import IMAGE_HEADER_SIZE and WOLFBOOT_SECTOR_SIZE
+IMAGE_HEADER_SIZE="$(awk -F '?=|:=|=' '$1 == "IMAGE_HEADER_SIZE" { print $2 }' config/examples/nrf5340.config)"
+WOLFBOOT_SECTOR_SIZE="$(awk -F '?=|:=|=' '$1 == "WOLFBOOT_SECTOR_SIZE" { print $2 }' config/examples/nrf5340.config)"
 
 # Defaults
 MAKE_ARGS=" DEBUG_SYMBOLS=1"
@@ -47,22 +48,26 @@ fi
 
 while test $# -gt 0; do
   case "$1" in
-    -h|--help|-?)
+    -h|--help|-\?)
       echo "nRF5340 build / flash script"
       echo " "
       echo "default: build, erase and program"
       echo " "
       echo "options:"
-      echo "-h, --help      show brief help"
-      echo "-c, --clean     cleanup build artifacts"
-      echo "-b, --build     build release with symbols"
-      echo "-d, --debug     build debug"
-      echo "-v, --verbose   build verbose"
-      echo "--version       use custom version"
-      echo "-e, --erase     do erase of internal/external flash"
-      echo "-p, --program   program images built"
-      echo "-u, --update    build update, sign and program external flash"
-      echo "-t, --delta     build update, sign delta and program external flash"
+      echo "-h, --help           show brief help"
+      echo "-c, --clean          cleanup build artifacts"
+      echo "-b, --build          build release with symbols"
+      echo "-d, --debug          build debug"
+      echo "-v, --verbose        build verbose"
+      echo "--version            use custom version"
+      echo "-e, --erase          do erase of internal/external flash"
+      echo "-ei, --erase-int     do erase of internal flash"
+      echo "-ee, --erase-ext     do erase of external flash"
+      echo "-p, --program        program images built"
+      echo "-pi, --program-int   program internal image (boot)"
+      echo "-pe, --program-ext   program external image (update)"
+      echo "-u, --update         build update, sign and program external flash"
+      echo "-t, --delta          build update, sign delta and program external flash"
       exit 0
       ;;
     -c|--clean)
@@ -93,12 +98,32 @@ while test $# -gt 0; do
       echo "Do erase"
       shift
       ;;
+    -ei|--erase-int)
+      DO_ERASE_INT=1
+      echo "Do erase internal"
+      shift
+      ;;
+    -ee|--erase-ext)
+      DO_ERASE_EXT=1
+      echo "Do erase external"
+      shift
+      ;;
     -p|--program)
       DO_PROGRAM_INT=1
       DO_PROGRAM_EXT=1
       echo "Do program"
       shift
       ;;
+    -pi|--program-int)
+      DO_PROGRAM_INT=1
+      echo "Do program internal"
+      shift
+      ;;
+    -pe|--program-ext)
+      DO_PROGRAM_EXT=1
+      echo "Do program external"
+      shift
+      ;;
     --version)
       UPDATE_VERSION="$2"
       echo "Use version ${UPDATE_VERSION}"
@@ -148,6 +173,8 @@ if [[ $DO_BUILD == 1 ]]; then
   make clean
   make $MAKE_ARGS
   cp test-app/image.bin tools/scripts/nrf5340/image_net.bin
+  cp wolfboot.elf tools/scripts/nrf5340/wolfboot_net.elf
+  cp test-app/image.elf tools/scripts/nrf5340/image_net.elf
   if [ ! -f tools/scripts/nrf5340/factory_net.bin ]; then
     cp test-app/image_v1_signed.bin tools/scripts/nrf5340/image_net_v1_signed.bin
     cp factory.bin tools/scripts/nrf5340/factory_net.bin
@@ -158,6 +185,8 @@ if [[ $DO_BUILD == 1 ]]; then
   make clean
   make $MAKE_ARGS
   cp test-app/image.bin tools/scripts/nrf5340/image_app.bin
+  cp wolfboot.elf tools/scripts/nrf5340/wolfboot_app.elf
+  cp test-app/image.elf tools/scripts/nrf5340/image_app.elf
   if [ ! -f tools/scripts/nrf5340/factory_app.bin ]; then
     cp test-app/image_v1_signed.bin tools/scripts/nrf5340/image_app_v1_signed.bin
     cp factory.bin tools/scripts/nrf5340/factory_app.bin
diff --git a/tools/scripts/nrf5340/net.gdbinit b/tools/scripts/nrf5340/net.gdbinit
new file mode 100644
index 00000000..80d09624
--- /dev/null
+++ b/tools/scripts/nrf5340/net.gdbinit
@@ -0,0 +1,7 @@
+file wolfboot_net.elf
+tar rem:3334
+add-symbol-file image_net.elf
+set pagination off
+foc c
+
+