diff --git a/bin/kl3_ram_build.bin b/bin/kl3_ram_build.bin
index 5941fcc..2badb94 100644
Binary files a/bin/kl3_ram_build.bin and b/bin/kl3_ram_build.bin differ
diff --git a/bin_to_hex.py b/bin_to_hex.py
index a583285..99ab0ac 100644
--- a/bin_to_hex.py
+++ b/bin_to_hex.py
@@ -2,6 +2,7 @@ import re
 import sys
 import struct
 import json
+from log import myprint
 
 
 # kunlun1,kunlun2,kunlun3的img类型
@@ -47,6 +48,23 @@ _DevType={
 }
 
 
+_PatternType={
+  0x00:"HTZD",
+  0x55:"HTZD",
+  0xaa:"JSMT",
+  0x99:"FLX",
+  0x66:"QJ",
+  0xcc:"SPE",
+  0x33:"GX",
+  0xdd:"DT",
+  0xa9:"YP",
+  0xc6:"WTZ",
+  0x93:"TCE"
+}
+
+
+
+
 _PKT_HEADER_MAGIC_NO = 0x00005566
 _IMG_HEADER_MAGIC_NO = 0xa4e49a17
 
@@ -123,8 +141,8 @@ def tran_img_headerv0(data:bytearray):
     # f 单精度浮点 d 双精度浮点 s 字符串
     a=struct.unpack('>HHIHBBIIIBBBBI',data[0:32])
     if(a[8]==_IMG_HEADER_MAGIC_NO):
-      ret["devType"]=hex(a[0])+f"({_DevType[a[0]]})"
-      ret["imgType"]=hex(a[1])+f"({_ImgType[a[1]]})"
+      ret["devType"]=hex(a[0])+f"({_DevType.get(a[0],'unknown')})"
+      ret["imgType"]=hex(a[1])+f"({_ImgType.get(a[1],'unknown')})"
       ret["imgSize"]=str(a[2])
       ret["imgVer"]=hex(a[3])
       ret["psramSize"]=str(a[4])
@@ -149,8 +167,8 @@ def tran_img_headerv1(data:bytearray):
     # f 单精度浮点 d 双精度浮点 s 字符串
     a=struct.unpack('>BBBBIBBBBIIIBBBBI',data[0:32])
     if(a[11]==_IMG_HEADER_MAGIC_NO):
-      ret["devType"]=hex(a[0])+f"({_DevType[a[0]]})"
-      ret["imgType"]=hex(a[1])+f"({_ImgType[a[1]]})"
+      ret["devType"]=hex(a[0])+f"({_DevType.get(a[0],'unknown')})"
+      ret["imgType"]=hex(a[1])+f"({_ImgType.get(a[1],'unknown')})"
       ret["encType"]=hex(a[2])
       ret["cfg"]=hex(a[3])
       ret["imgSize"]=str(a[4])
@@ -176,7 +194,7 @@ def pkt_header_check(data:bytearray):
   magic=(data[12]<<24)|(data[13]<<16)|(data[14]<<8)|(data[15])
   if (magic==_PKT_HEADER_MAGIC_NO):
     return True
-  print(f"magic={hex(magic)}")
+  myprint(f"magic={hex(magic)}")
   return False
 
 # 判断是不是img_header
@@ -186,7 +204,7 @@ def img_header_check(data:bytearray):
   magic=(data[20]<<24)|(data[21]<<16)|(data[22]<<8)|(data[23])
   if (magic==_IMG_HEADER_MAGIC_NO):
     imghdr_v=data[11]
-    print(f"magic={hex(magic)}, imghdr_v={imghdr_v}")
+    myprint(f"magic={hex(magic)}, imghdr_v={imghdr_v}")
     # 返回使用的结构体类型
     if(imghdr_v==0x10):
       return 'V1'
@@ -233,12 +251,33 @@ def bin_to_hex_file(bin_file_name:str,hex_file_name:str,enc=0):
   with open(bin_file_name,mode='rb') as f:
     bin=bytearray(f.read())
     if(enc):
-      pat=(bin[0]^0x03)&0xff
+      myprint("start decrypt")
+      pat=(bin[12]^0x00)&0xff
+      myprint(f"decrypt image:{hex(pat)}({_PatternType.get(pat,'unknown')})")
       for index in range(len(bin)):
         bin[index]=bin[index]^pat
   with open(hex_file_name,mode='w+',encoding="utf-8") as f:
     bin_to_hex(bin,f)
 
+
+def bin_file_decrypt(bin_file:str):
+  with open(bin_file,mode='rb') as f:
+    bin=bytearray(f.read())
+    # 自动判断是否需要解密
+    if ((bin[12]==bin[13])and(bin[12]!=0x00)):
+      pat=(bin[12]^0x00)&0xff
+      myprint(f"decrypt image:{hex(pat)}({_PatternType.get(pat,'unknown')})")
+      for index in range(len(bin)):
+        bin[index]=bin[index]^pat
+    else:
+      pat=bin[1]
+      myprint(f"copy image:{hex(pat)}({_PatternType.get(pat,'unknown')})")
+  with open('tmp.bin',mode='wb+') as f:
+    f.write(bin)
+    return "tmp.bin"
+
+
+
 # bin_to_hex.py input_file output_file
 if __name__ == "__main__":
   # bin_to_hex_file(sys.argv[1],sys.argv[2],sys.argv[3])
diff --git a/kunlun.py b/kunlun.py
index b9d2d96..4d5c720 100644
--- a/kunlun.py
+++ b/kunlun.py
@@ -13,6 +13,7 @@ import binascii
 from log import myprint
 from log import log_init
 from bin_to_hex import bin_to_hex_file
+from bin_to_hex import bin_file_decrypt
 
 
 def init_send(s_port:serial.Serial, send_str):
@@ -59,7 +60,7 @@ def burn_flash_bin(s_port:serial.Serial, x_modem:xmodem.XMODEM, f_file):
             continue
         print_device_str(tmp)
         s_info += tmp
-        if(s_info.find(b'C')>=0 and bytes2read==1):
+        if(s_info.find(b'CCC')>=0 and bytes2read==1):
             m_flash=True
         else:
             m_flash=False
@@ -79,10 +80,12 @@ def burn_flash_bin(s_port:serial.Serial, x_modem:xmodem.XMODEM, f_file):
                 myprint("Cannot load file, please check the file path and retry. Press <enter> to exit")
                 sys.exit()
 
-            xmodem_send = x_modem.send(stream, quiet=True, callback=download_callback)
+            xmodem_send = x_modem.send(stream, quiet=True, callback=download_callback,retry=16)
             etime = datetime.datetime.now()
             trans_time_1 = (etime - stime).seconds
             myprint ("\nTransferring %s result: %s, consuming time: %d s \n" % (f_file,xmodem_send, trans_time_1))
+            if(xmodem_send is False):
+                break
         elif m_done:
             myprint("Update done.")
             break
@@ -107,9 +110,9 @@ def print_device_str(data:bytearray):
     for item in data:
         try:
             d=item.decode('utf-8')
-            myprint(d.strip())
+            myprint("DEVICE:",d.strip())
         except Exception as e:
-            myprint(f" {item.hex()}")
+            myprint("DEVICE:",item)
 
 # 上传固件
 def upload_bin(x_modem:xmodem.XMODEM, w_file):
@@ -250,8 +253,17 @@ if __name__ == '__main__':
 
     # 发送启动字符让设备进入xmodem模式
     init_send(ser, init_str.encode("utf-8"))
-    burn_ram_bin(modem, ram_file)
-    # burn_ram_bin(modem, "kl3_ram_build.bin")
 
-    upload_fun()
-    # burn_fun()
+    # burn_ram_bin(modem, ram_file)
+    # upload_fun()
+
+    burn_ram_bin(modem, "bin/kl3_ram_build.bin")
+    dir_path="\\\\10.0.15.200\\内网拷贝进来的\\ran.chuan\\"
+    for item in os.listdir(dir_path):
+        if(item.endswith('.bin')):
+            iot_flash_file=os.path.join(dir_path,item)
+            break
+    # iot_flash_file="C:\\new\\buildout\\kl3_sta_kunlun.bin"
+    iot_flash_file="C:\\new\\buildout\\HZ-SG-TCE3PS03.bin"
+    iot_flash_file=bin_file_decrypt(iot_flash_file)
+    burn_fun()
diff --git a/log.py b/log.py
index 5b04b56..cc31776 100644
--- a/log.py
+++ b/log.py
@@ -12,9 +12,12 @@ def myprint_dec(func):
     def wrapper(*args, **kwargs):
         # 在这里添加额外的功能
         print(*args, **kwargs)
-        kwargs["file"]=_log_fp
-        result = func(*args, **kwargs)
-        _log_fp.flush()
+        if(_log_fp is not None):
+            kwargs["file"]=_log_fp
+            result = func(*args, **kwargs)
+            _log_fp.flush()
+        else:
+            result=None
         return result
     return wrapper