diff --git a/platformio/builder/scripts/frameworks/mbed.py b/platformio/builder/scripts/frameworks/mbed.py
index 16503122..76aca7fa 100644
--- a/platformio/builder/scripts/frameworks/mbed.py
+++ b/platformio/builder/scripts/frameworks/mbed.py
@@ -28,6 +28,7 @@ http://mbed.org/
 
 from __future__ import print_function
 
+import json
 import re
 import sys
 import xml.etree.ElementTree as ElementTree
@@ -251,6 +252,37 @@ eixdata = parse_eix_file(
 build_flags = get_build_flags(eixdata)
 variant_dir = join("$PLATFORMFW_DIR", "variant", variant)
 
+
+def _find_soft_device_hex():
+
+    if not isfile(join(env.subst("$PLATFORMFW_DIR"), "targets.json")):
+        return None
+
+    with open(join(env.subst("$PLATFORMFW_DIR"), "targets.json")) as fp:
+        data = json.load(fp)
+
+    def _find_hex(target_name):
+        assert isinstance(data, dict)
+        if target_name not in data:
+            return None
+        target = data[target_name]
+        if "EXPECTED_SOFTDEVICES_WITH_OFFSETS" not in target:
+            try:
+                return _find_hex(target.get("inherits", [])[0])
+            except IndexError:
+                return None
+        else:
+            return target['EXPECTED_SOFTDEVICES_WITH_OFFSETS'][0]['name']
+
+    softdevice_name = _find_hex(variant)
+    if softdevice_name:
+        for root, _, files in walk(env.subst(variant_dir)):
+            if softdevice_name in files:
+                return join(root, softdevice_name)
+
+    env.Exit("Error: Cannot find SoftDevice binary file for your board!")
+
+
 env.Replace(
     _mbed_whole_archive_hook=_mbed_whole_archive_hook,
     _LIBFLAGS="${_mbed_whole_archive_hook(%s)}" % env.get("_LIBFLAGS")[2:-1],
@@ -263,6 +295,10 @@ env.Replace(
         join(variant_dir, eixdata.get("LDSCRIPT_PATH")[0]))
 )
 
+
+if env.get("PLATFORM") == "nordicnrf51":
+    env.Append(SOFTDEVICEHEX=_find_soft_device_hex())
+
 # restore external build flags
 env.ProcessFlags(
     env.get("BOARD_OPTIONS", {}).get("build", {}).get("extra_flags"))
diff --git a/platformio/builder/scripts/nordicnrf51.py b/platformio/builder/scripts/nordicnrf51.py
index 99f96614..ae4626c1 100644
--- a/platformio/builder/scripts/nordicnrf51.py
+++ b/platformio/builder/scripts/nordicnrf51.py
@@ -18,7 +18,7 @@
 
 from os.path import join
 
-from SCons.Script import (COMMAND_LINE_TARGETS, AlwaysBuild, Default,
+from SCons.Script import (COMMAND_LINE_TARGETS, AlwaysBuild, Builder, Default,
                           DefaultEnvironment, SConscript)
 
 env = DefaultEnvironment()
@@ -35,6 +35,25 @@ if env.subst("$BOARD") == "rfduino":
         UPLOADERFLAGS=["-q", '"$UPLOAD_PORT"'],
         UPLOADCMD='"$UPLOADER" $UPLOADERFLAGS $SOURCES'
     )
+else:
+    env.Append(
+        BUILDERS=dict(
+            MergeHex=Builder(
+                action=" ".join([
+                    join("$PIOPACKAGES_DIR", "tool-sreccat", "srec_cat"),
+                    "$SOFTDEVICEHEX",
+                    "-intel",
+                    "$SOURCES",
+                    "-intel",
+                    "-o",
+                    "$TARGET",
+                    "-intel",
+                    "--line-length=44"
+                ]),
+                suffix=".hex"
+            )
+        )
+    )
 
 #
 # Target: Build executable and linkable firmware
@@ -49,7 +68,13 @@ target_elf = env.BuildProgram()
 if "uploadlazy" in COMMAND_LINE_TARGETS:
     target_firm = join("$BUILD_DIR", "firmware.hex")
 else:
-    target_firm = env.ElfToHex(join("$BUILD_DIR", "firmware"), target_elf)
+    if env.subst("$BOARD") == "rfduino":
+        target_firm = env.ElfToHex(join("$BUILD_DIR", "firmware"), target_elf)
+    else:
+        target_firm = env.MergeHex(
+            join("$BUILD_DIR", "firmware"),
+            env.ElfToHex(join("$BUILD_DIR", "userfirmware"), target_elf)
+        )
 
 #
 # Target: Print binary size
diff --git a/platformio/platforms/base.py b/platformio/platforms/base.py
index 5566f37b..ba97cbe6 100644
--- a/platformio/platforms/base.py
+++ b/platformio/platforms/base.py
@@ -181,6 +181,9 @@ PLATFORM_PACKAGES = {
     ],
     "tool-arduino101load": [
         ("Genuino101 uploader", "https://github.com/01org/intel-arduino-tools")
+    ],
+    "tool-sreccat": [
+        ("Merging tool", "https://github.com/marcows/SRecord")
     ]
 }
 
diff --git a/platformio/platforms/nordicnrf51.py b/platformio/platforms/nordicnrf51.py
index b68e240b..32a0d054 100644
--- a/platformio/platforms/nordicnrf51.py
+++ b/platformio/platforms/nordicnrf51.py
@@ -43,6 +43,10 @@ class Nordicnrf51Platform(BasePlatform):
             "alias": "framework"
         },
 
+        "tool-sreccat": {
+            "default": True
+        },
+
         "tool-rfdloader": {
         }
     }