diff --git a/ports/nrf/Makefile b/ports/nrf/Makefile
index c58ff4f5cb..e331c95ad1 100644
--- a/ports/nrf/Makefile
+++ b/ports/nrf/Makefile
@@ -249,23 +249,6 @@ $(filter $(PY_BUILD)/../extmod/vfs_fat_%.o, $(PY_O)): COPT += -Os
 
 .PHONY: all flash sd binary hex
 
-ifeq ($(BOARD),feather52)
-.PHONY: dfu-gen dfu-flash
-check_defined = \
-    $(strip $(foreach 1,$1, \
-    $(call __check_defined,$1,$(strip $(value 2)))))
-__check_defined = \
-    $(if $(value $1),, \
-    $(error Undefined make flag: $1$(if $2, ($2))))
-
-dfu-gen:
-	nrfutil dfu genpkg --dev-type 0x0052 --application $(BUILD)/$(OUTPUT_FILENAME).hex $(BUILD)/dfu-package.zip
-
-dfu-flash:
-	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyUSB0)
-	sudo nrfutil dfu serial --package $(BUILD)/dfu-package.zip -p $(SERIAL)
-endif
-
 all: binary hex
 
 OUTPUT_FILENAME = firmware
diff --git a/ports/nrf/README.md b/ports/nrf/README.md
index 839211d2c4..fe4052f657 100644
--- a/ports/nrf/README.md
+++ b/ports/nrf/README.md
@@ -97,7 +97,7 @@ pca10028             | s110                    | Peripheral             | [Segge
 pca10031             | s110                    | Peripheral             | [Segger](#segger-targets)
 wt51822_s4at         | s110                    | Peripheral             | Manual, see [datasheet](https://4tronix.co.uk/picobot2/WT51822-S4AT.pdf) for pinout
 pca10040             | s132                    | Peripheral and Central | [Segger](#segger-targets)
-feather52            | s132                    | Peripheral and Central | [UART DFU](#dfu-targets)
+feather52            | s132                    | Peripheral and Central | Manual, SWDIO and SWCLK solder points on the bottom side of the board
 arduino_primo        | s132                    | Peripheral and Central | [PyOCD](#pyocdopenocd-targets)
 pca10056             |                         |                        | [Segger](#segger-targets)
 
@@ -124,24 +124,6 @@ Install the necessary tools to flash and debug using OpenOCD:
     sudo apt-get install openocd
     sudo pip install pyOCD
 
-## DFU Targets
-
-    sudo apt-get install build-essential libffi-dev pkg-config gcc-arm-none-eabi git python python-pip
-    git clone https://github.com/adafruit/Adafruit_nRF52_Arduino.git
-    cd Adafruit_nRF52_Arduino/tools/nrfutil-0.5.2/
-    sudo pip install -r requirements.txt
-    sudo python setup.py install
-  
-**make flash** and **make sd** will not work with DFU targets. Hence, **dfu-gen** and **dfu-flash** must be used instead.
-* dfu-gen: Generates a Firmware zip to be used by the DFU flash application.
-* dfu-flash: Triggers the DFU flash application to upload the firmware from the generated Firmware zip file. 
-
-Example on how to generate and flash feather52 target:
-
-    make BOARD=feather52 SD=s132
-    make BOARD=feather52 SD=s132 dfu-gen
-    make BOARD=feather52 SD=s132 dfu-flash
-    
 ## Bluetooth LE REPL
 
 The port also implements a BLE REPL driver. This feature is disabled by default, as it will deactivate the UART REPL when activated. As some of the nRF devices only have one UART, using the BLE REPL free's the UART instance such that it can be used as a general UART peripheral not bound to REPL.
diff --git a/ports/nrf/boards/feather52/custom_nrf52832_dfu_app.ld b/ports/nrf/boards/feather52/custom_nrf52832_dfu_app.ld
deleted file mode 100644
index 13a435f7f7..0000000000
--- a/ports/nrf/boards/feather52/custom_nrf52832_dfu_app.ld
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
-    GNU linker script for NRF52 w/ s132 2.0.1 SoftDevice
-*/
-
-/* Specify the memory areas */
-/* Memory map: https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/memory-map */
-MEMORY
-{
-    FLASH (rx)      : ORIGIN = 0x00000000, LENGTH = 512K     /* entire flash */
-    FLASH_TEXT (rx) : ORIGIN = 0x0001C000, LENGTH = 162K     /* app */
-    FLASH_TEMP (rx) : ORIGIN = 0x00044800, LENGTH = 162K     /* temporary storage area for DFU */
-    FLASH_USER (rx) : ORIGIN = 0x0006D000, LENGTH = 28K      /* app data, filesystem */
-    RAM (xrw)       : ORIGIN = 0x200039C0, LENGTH = 0x0C640  /* 49.5 KiB, give 8KiB headroom for softdevice */
-}
- 
-/* produce a link error if there is not this amount of RAM for these sections */
-_stack_size = 8K;
-_minimum_heap_size = 16K;
-
-_fs_start = ORIGIN(FLASH_USER);
-_fs_end   = ORIGIN(FLASH_USER) + LENGTH(FLASH_USER);
-
-INCLUDE "boards/common.ld"
diff --git a/ports/nrf/boards/feather52/mpconfigboard.mk b/ports/nrf/boards/feather52/mpconfigboard.mk
index f8c33fd5fb..73b90b9a90 100644
--- a/ports/nrf/boards/feather52/mpconfigboard.mk
+++ b/ports/nrf/boards/feather52/mpconfigboard.mk
@@ -1,9 +1,8 @@
 MCU_SERIES = m4
 MCU_VARIANT = nrf52
 MCU_SUB_VARIANT = nrf52832
-SOFTDEV_VERSION = 2.0.1
-
-LD_FILE = boards/feather52/custom_nrf52832_dfu_app.ld
+SOFTDEV_VERSION = 3.0.0
+LD_FILES += boards/nrf52832_512k_64k.ld
 
 NRF_DEFINES += -DNRF52832_XXAA