diff --git a/source/dfuse-pack.py b/source/dfuse-pack.py
new file mode 100755
index 00000000..64c3ac3a
--- /dev/null
+++ b/source/dfuse-pack.py
@@ -0,0 +1,349 @@
+#!/usr/bin/python
+
+# Written by Antonio Galea - 2010/11/18
+# Distributed under Gnu LGPL 3.0
+# see http://www.gnu.org/licenses/lgpl-3.0.txt
+
+import sys, struct, zlib, os
+import binascii
+from optparse import OptionParser
+
+try:
+    from intelhex import IntelHex
+except ImportError:
+    IntelHex = None
+
+DEFAULT_DEVICE = "0x0483:0xdf11"
+DEFAULT_NAME = b"ST..."
+
+# Prefix and Suffix sizes are derived from ST's DfuSe File Format Specification (UM0391), DFU revision 1.1a
+PREFIX_SIZE = 11
+SUFFIX_SIZE = 16
+
+
+def named(tuple, names):
+    return dict(list(zip(names.split(), tuple)))
+
+
+def consume(fmt, data, names):
+    n = struct.calcsize(fmt)
+    return named(struct.unpack(fmt, data[:n]), names), data[n:]
+
+
+def cstring(bytestring):
+    return bytestring.partition(b"\0")[0]
+
+
+def compute_crc(data):
+    return 0xFFFFFFFF & -zlib.crc32(data) - 1
+
+
+def parse(file, dump_images=False):
+    print('File: "%s"' % file)
+    data = open(file, "rb").read()
+    crc = compute_crc(data[:-4])
+    prefix, data = consume("<5sBIB", data, "signature version size targets")
+    print(
+        "%(signature)s v%(version)d, image size: %(size)d, targets: %(targets)d"
+        % prefix
+    )
+    for t in range(prefix["targets"]):
+        tprefix, data = consume(
+            "<6sBI255s2I", data, "signature altsetting named name size elements"
+        )
+        tprefix["num"] = t
+        if tprefix["named"]:
+            tprefix["name"] = cstring(tprefix["name"])
+        else:
+            tprefix["name"] = ""
+        print(
+            '%(signature)s %(num)d, alt setting: %(altsetting)s, name: "%(name)s", size: %(size)d, elements: %(elements)d'
+            % tprefix
+        )
+        tsize = tprefix["size"]
+        target, data = data[:tsize], data[tsize:]
+        for e in range(tprefix["elements"]):
+            eprefix, target = consume("<2I", target, "address size")
+            eprefix["num"] = e
+            print("  %(num)d, address: 0x%(address)08x, size: %(size)d" % eprefix)
+            esize = eprefix["size"]
+            image, target = target[:esize], target[esize:]
+            if dump_images:
+                out = "%s.target%d.image%d.bin" % (file, t, e)
+                open(out, "wb").write(image)
+                print('    DUMPED IMAGE TO "%s"' % out)
+        if len(target):
+            print("target %d: PARSE ERROR" % t)
+    suffix = named(
+        struct.unpack("<4H3sBI", data[:SUFFIX_SIZE]),
+        "device product vendor dfu ufd len crc",
+    )
+    print(
+        "usb: %(vendor)04x:%(product)04x, device: 0x%(device)04x, dfu: 0x%(dfu)04x, %(ufd)s, %(len)d, 0x%(crc)08x"
+        % suffix
+    )
+    if crc != suffix["crc"]:
+        print("CRC ERROR: computed crc32 is 0x%08x" % crc)
+    data = data[SUFFIX_SIZE:]
+    if data:
+        print("PARSE ERROR")
+
+
+def checkbin(binfile):
+    data = open(binfile, "rb").read()
+    if len(data) < SUFFIX_SIZE:
+        return
+    crc = compute_crc(data[:-4])
+    suffix = named(
+        struct.unpack("<4H3sBI", data[-SUFFIX_SIZE:]),
+        "device product vendor dfu ufd len crc",
+    )
+    if crc == suffix["crc"] and suffix["ufd"] == b"UFD":
+        print(
+            "usb: %(vendor)04x:%(product)04x, device: 0x%(device)04x, dfu: 0x%(dfu)04x, %(ufd)s, %(len)d, 0x%(crc)08x"
+            % suffix
+        )
+        print("It looks like the file %s has a DFU suffix!" % binfile)
+        print("Please remove any DFU suffix and retry.")
+        sys.exit(1)
+
+
+def build(file, targets, name=DEFAULT_NAME, device=DEFAULT_DEVICE):
+    data = b""
+    for t, target in enumerate(targets):
+        tdata = b""
+        for image in target:
+            tdata += (
+                struct.pack("<2I", image["address"], len(image["data"])) + image["data"]
+            )
+            ealt = image["alt"]
+        tdata = (
+            struct.pack(
+                "<6sBI255s2I", b"Target", ealt, 1, name, len(tdata), len(target)
+            )
+            + tdata
+        )
+        data += tdata
+    data = (
+        struct.pack(
+            "<5sBIB", b"DfuSe", 1, PREFIX_SIZE + len(data) + SUFFIX_SIZE, len(targets)
+        )
+        + data
+    )
+    v, d = [int(x, 0) & 0xFFFF for x in device.split(":", 1)]
+    data += struct.pack("<4H3sB", 0, d, v, 0x011A, b"UFD", SUFFIX_SIZE)
+    crc = compute_crc(data)
+    data += struct.pack("<I", crc)
+    open(file, "wb").write(data)
+
+
+if __name__ == "__main__":
+    usage = """
+%prog [-d|--dump] infile.dfu
+%prog {-b|--build} address:file.bin [-b address:file.bin ...] [{-D|--device}=vendor:device] outfile.dfu
+%prog {-s|--build-s19} file.s19 [{-D|--device}=vendor:device] outfile.dfu
+%prog {-i|--build-ihex} file.hex [-i file.hex ...] [{-D|--device}=vendor:device] outfile.dfu"""
+    parser = OptionParser(usage=usage)
+    parser.add_option(
+        "-b",
+        "--build",
+        action="append",
+        dest="binfiles",
+        help="Include a raw binary file, to be loaded at the specified address. The BINFILES argument is of the form address:path-to-file. The address can have @X appended where X is the alternate interface number for this binary file. Note that the binary files must not have any DFU suffix!",
+        metavar="BINFILES",
+    )
+    parser.add_option(
+        "-i",
+        "--build-ihex",
+        action="append",
+        dest="hexfiles",
+        help="build a DFU file from given Intel HEX HEXFILES",
+        metavar="HEXFILES",
+    )
+    parser.add_option(
+        "-s",
+        "--build-s19",
+        type="string",
+        dest="s19files",
+        help="build a DFU file from given S19 S-record S19FILE",
+        metavar="S19FILE",
+    )
+    parser.add_option(
+        "-D",
+        "--device",
+        action="store",
+        dest="device",
+        help="build for DEVICE, defaults to %s" % DEFAULT_DEVICE,
+        metavar="DEVICE",
+    )
+    parser.add_option(
+        "-a",
+        "--alt-intf",
+        action="store",
+        dest="alt",
+        help="build for alternate interface number ALTINTF, defaults to 0",
+        metavar="ALTINTF",
+    )
+    parser.add_option(
+        "-d",
+        "--dump",
+        action="store_true",
+        dest="dump_images",
+        default=False,
+        help="dump contained images to current directory",
+    )
+    (options, args) = parser.parse_args()
+
+    targets = []
+
+    if options.alt:
+        try:
+            default_alt = int(options.alt)
+        except ValueError:
+            print("Alternate interface option argument %s invalid." % options.alt)
+            sys.exit(1)
+    else:
+        default_alt = 0
+
+    if (options.binfiles or options.hexfiles) and len(args) == 1:
+        target = []
+        old_ealt = None
+
+        if options.binfiles:
+            for arg in options.binfiles:
+                try:
+                    address, binfile = arg.split(":", 1)
+                except ValueError:
+                    print("Address:file couple '%s' invalid." % arg)
+                    sys.exit(1)
+                try:
+                    address, alts = address.split("@", 1)
+                    if alts:
+                        try:
+                            ealt = int(alts)
+                        except ValueError:
+                            print("Alternate interface number %s invalid." % alts)
+                            sys.exit(1)
+                    else:
+                        ealt = default_alt
+                except ValueError:
+                    ealt = default_alt
+                try:
+                    address = int(address, 0) & 0xFFFFFFFF
+                except ValueError:
+                    print("Address %s invalid." % address)
+                    sys.exit(1)
+                if not os.path.isfile(binfile):
+                    print("Unreadable file '%s'." % binfile)
+                    sys.exit(1)
+                checkbin(binfile)
+                if old_ealt is not None and ealt != old_ealt:
+                    targets.append(target)
+                    target = []
+                target.append(
+                    {
+                        "address": address,
+                        "alt": ealt,
+                        "data": open(binfile, "rb").read(),
+                    }
+                )
+                old_ealt = ealt
+            targets.append(target)
+
+        if options.hexfiles:
+            if not IntelHex:
+                print("Error: IntelHex python module could not be found")
+                sys.exit(1)
+            for hexf in options.hexfiles:
+                ih = IntelHex(hexf)
+                for (address, end) in ih.segments():
+                    try:
+                        address = address & 0xFFFFFFFF
+                    except ValueError:
+                        print("Address %s invalid." % address)
+                        sys.exit(1)
+                    target.append(
+                        {
+                            "address": address,
+                            "alt": default_alt,
+                            "data": ih.tobinstr(start=address, end=end - 1),
+                        }
+                    )
+            targets.append(target)
+
+        outfile = args[0]
+        device = DEFAULT_DEVICE
+        if options.device:
+            device = options.device
+        try:
+            v, d = [int(x, 0) & 0xFFFF for x in device.split(":", 1)]
+        except:
+            print("Invalid device '%s'." % device)
+            sys.exit(1)
+        build(outfile, targets, DEFAULT_NAME, device)
+    elif options.s19files and len(args) == 1:
+        address = 0
+        data = ""
+        target = []
+        name = DEFAULT_NAME
+        with open(options.s19files) as f:
+            lines = f.readlines()
+            for line in lines:
+                curaddress = 0
+                curdata = ""
+                line = line.rstrip()
+                if line.startswith("S0"):
+                    name = binascii.a2b_hex(line[8 : len(line) - 2])
+                elif line.startswith("S3"):
+                    try:
+                        curaddress = int(line[4:12], 16) & 0xFFFFFFFF
+                    except ValueError:
+                        print("Address %s invalid." % address)
+                        sys.exit(1)
+                    curdata = binascii.unhexlify(line[12:-2])
+                elif line.startswith("S2"):
+                    try:
+                        curaddress = int(line[4:10], 16) & 0xFFFFFFFF
+                    except ValueError:
+                        print("Address %s invalid." % address)
+                        sys.exit(1)
+                    curdata = binascii.unhexlify(line[10:-2])
+                elif line.startswith("S1"):
+                    try:
+                        curaddress = int(line[4:8], 16) & 0xFFFFFFFF
+                    except ValueError:
+                        print("Address %s invalid." % address)
+                        sys.exit(1)
+                    curdata = binascii.unhexlify(line[8:-2])
+                if address == 0:
+                    address = curaddress
+                    data = curdata
+                elif address + len(data) != curaddress:
+                    target.append(
+                        {"address": address, "alt": default_alt, "data": data}
+                    )
+                    address = curaddress
+                    data = curdata
+                else:
+                    data += curdata
+        outfile = args[0]
+        device = DEFAULT_DEVICE
+        if options.device:
+            device = options.device
+        try:
+            v, d = [int(x, 0) & 0xFFFF for x in device.split(":", 1)]
+        except:
+            print("Invalid device '%s'." % device)
+            sys.exit(1)
+        build(outfile, [target], name, device)
+    elif len(args) == 1:
+        infile = args[0]
+        if not os.path.isfile(infile):
+            print("Unreadable file '%s'." % infile)
+            sys.exit(1)
+        parse(infile, dump_images=options.dump_images)
+    else:
+        parser.print_help()
+        if not IntelHex:
+            print("Note: Intel hex files support requires the IntelHex python module")
+        sys.exit(1)