1 files changed, 4 insertions, 4 deletions
diff --git a/bin/dfu b/bin/dfu
index e270438..d37d3ba 100755
--- a/bin/dfu
+++ b/bin/dfu
@@ -43,7 +43,7 @@ import struct
 import serial
 import argparse
 
-from binascii import crc32
+from binascii import crc32, hexlify
 
 CHUNK_SIZE = 4096
 
@@ -80,20 +80,20 @@ def _write(dst, data):
         dst.write(data[i])
         time.sleep(0.1)
     if len(data) == 4:
-        print("Wrote 0x{:02x}{:02x}{:02x}{:02x}".format(ord(data[0]), ord(data[1]), ord(data[2]), ord(data[3])))
+        print("Wrote 0x{}".format(hexlify(data)))
     else:
         print("Wrote {!r}".format(data))
 
 
 def _read(dst, verbose=False):
-    res = ''
+    res = b''
     while True:
         x = dst.read(1)
         if not x:
             break
         res += x
     if res and verbose:
-        print ("Read {!r}".format(res))
+        print("Read {!r}".format(res))
     return res