diff --git a/shadowsocks-csharp/3rd/zxing/common/CharacterSetECI.cs b/shadowsocks-csharp/3rd/zxing/common/CharacterSetECI.cs
deleted file mode 100755
index cb42eb5f..00000000
--- a/shadowsocks-csharp/3rd/zxing/common/CharacterSetECI.cs
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
-* Copyright 2008 ZXing authors
-*
-* Licensed under the Apache License, Version 2.0 (the "License");
-* you may not use this file except in compliance with the License.
-* You may obtain a copy of the License at
-*
-*      http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
-
-using System;
-using System.Collections.Generic;
-
-namespace ZXing.Common
-{
-   /// <summary> Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1
-   /// of ISO 18004.
-   /// 
-   /// </summary>
-   /// <author>Sean Owen</author>
-   public sealed class CharacterSetECI : ECI
-   {
-      internal static readonly IDictionary<int, CharacterSetECI> VALUE_TO_ECI;
-      internal static readonly IDictionary<string, CharacterSetECI> NAME_TO_ECI;
-
-      private readonly String encodingName;
-
-      public String EncodingName
-      {
-         get
-         {
-            return encodingName;
-         }
-
-      }
-
-      static CharacterSetECI()
-      {
-         VALUE_TO_ECI = new Dictionary<int, CharacterSetECI>();
-         NAME_TO_ECI = new Dictionary<string, CharacterSetECI>();
-         // TODO figure out if these values are even right!
-         addCharacterSet(0, "CP437");
-         addCharacterSet(1, new[] { "ISO-8859-1", "ISO8859_1" });
-         addCharacterSet(2, "CP437");
-         addCharacterSet(3, new[] { "ISO-8859-1", "ISO8859_1" });
-         addCharacterSet(4, new[] { "ISO-8859-2", "ISO8859_2" });
-         addCharacterSet(5, new[] { "ISO-8859-3", "ISO8859_3" });
-         addCharacterSet(6, new[] { "ISO-8859-4", "ISO8859_4" });
-         addCharacterSet(7, new[] { "ISO-8859-5", "ISO8859_5" });
-         addCharacterSet(8, new[] { "ISO-8859-6", "ISO8859_6" });
-         addCharacterSet(9, new[] { "ISO-8859-7", "ISO8859_7" });
-         addCharacterSet(10, new[] { "ISO-8859-8", "ISO8859_8" });
-         addCharacterSet(11, new[] { "ISO-8859-9", "ISO8859_9" });
-         addCharacterSet(12, new[] { "ISO-8859-4", "ISO-8859-10", "ISO8859_10" }); // use ISO-8859-4 because ISO-8859-16 isn't supported
-         addCharacterSet(13, new[] { "ISO-8859-11", "ISO8859_11" });
-         addCharacterSet(15, new[] { "ISO-8859-13", "ISO8859_13" });
-         addCharacterSet(16, new[] { "ISO-8859-1", "ISO-8859-14", "ISO8859_14" }); // use ISO-8859-1 because ISO-8859-16 isn't supported
-         addCharacterSet(17, new[] { "ISO-8859-15", "ISO8859_15" });
-         addCharacterSet(18, new[] { "ISO-8859-3", "ISO-8859-16", "ISO8859_16" }); // use ISO-8859-3 because ISO-8859-16 isn't supported
-         addCharacterSet(20, new[] { "SJIS", "Shift_JIS" });
-         addCharacterSet(21, new[] { "WINDOWS-1250", "CP1250" });
-         addCharacterSet(22, new[] { "WINDOWS-1251", "CP1251" });
-         addCharacterSet(23, new[] { "WINDOWS-1252", "CP1252" });
-         addCharacterSet(24, new[] { "WINDOWS-1256", "CP1256" });
-         addCharacterSet(25, new[] { "UTF-16BE", "UNICODEBIG" });
-         addCharacterSet(26, new[] { "UTF-8", "UTF8" });
-         addCharacterSet(27, "US-ASCII");
-         addCharacterSet(170, "US-ASCII");
-         addCharacterSet(28, "BIG5");
-         addCharacterSet(29, new[] { "GB18030", "GB2312", "EUC_CN", "GBK" });
-         addCharacterSet(30, new[] { "EUC-KR", "EUC_KR" });
-      }
-
-      private CharacterSetECI(int value, String encodingName)
-         : base(value)
-      {
-         this.encodingName = encodingName;
-      }
-
-      private static void addCharacterSet(int value, String encodingName)
-      {
-         var eci = new CharacterSetECI(value, encodingName);
-         VALUE_TO_ECI[value] = eci; // can't use valueOf
-         NAME_TO_ECI[encodingName] = eci;
-      }
-
-      private static void addCharacterSet(int value, String[] encodingNames)
-      {
-         var eci = new CharacterSetECI(value, encodingNames[0]);
-         VALUE_TO_ECI[value] = eci; // can't use valueOf
-         foreach (string t in encodingNames)
-         {
-            NAME_TO_ECI[t] = eci;
-         }
-      }
-
-      /// <param name="value">character set ECI value
-      /// </param>
-      /// <returns> {@link CharacterSetECI} representing ECI of given value, or null if it is legal but
-      /// unsupported
-      /// </returns>
-      /// <throws>  IllegalArgumentException if ECI value is invalid </throws>
-      public static CharacterSetECI getCharacterSetECIByValue(int value)
-      {
-         if (value < 0 || value >= 900)
-         {
-            return null;
-         }
-         return VALUE_TO_ECI[value];
-      }
-
-      /// <param name="name">character set ECI encoding name
-      /// </param>
-      /// <returns> {@link CharacterSetECI} representing ECI for character encoding, or null if it is legal
-      /// but unsupported
-      /// </returns>
-      public static CharacterSetECI getCharacterSetECIByName(String name)
-      {
-         return NAME_TO_ECI[name.ToUpper()];
-      }
-   }
-}
\ No newline at end of file
diff --git a/shadowsocks-csharp/3rd/zxing/common/ECI.cs b/shadowsocks-csharp/3rd/zxing/common/ECI.cs
deleted file mode 100755
index fa947ba2..00000000
--- a/shadowsocks-csharp/3rd/zxing/common/ECI.cs
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
-* Copyright 2008 ZXing authors
-*
-* Licensed under the Apache License, Version 2.0 (the "License");
-* you may not use this file except in compliance with the License.
-* You may obtain a copy of the License at
-*
-*      http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
-using System;
-namespace ZXing.Common
-{
-
-   /// <summary> Superclass of classes encapsulating types ECIs, according to "Extended Channel Interpretations"
-   /// 5.3 of ISO 18004.
-   /// 
-   /// </summary>
-   /// <author>  Sean Owen
-   /// </author>
-   /// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source 
-   /// </author>
-   public abstract class ECI
-   {
-      virtual public int Value
-      {
-         get
-         {
-            return value_Renamed;
-         }
-
-      }
-
-      //UPGRADE_NOTE: Final was removed from the declaration of 'value '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
-      private int value_Renamed;
-
-      internal ECI(int value_Renamed)
-      {
-         this.value_Renamed = value_Renamed;
-      }
-
-      /// <param name="value">ECI value
-      /// </param>
-      /// <returns> {@link ECI} representing ECI of given value, or null if it is legal but unsupported
-      /// </returns>
-      /// <throws>  IllegalArgumentException if ECI value is invalid </throws>
-      public static ECI getECIByValue(int value_Renamed)
-      {
-         if (value_Renamed < 0 || value_Renamed > 999999)
-         {
-            throw new System.ArgumentException("Bad ECI value: " + value_Renamed);
-         }
-         if (value_Renamed < 900)
-         {
-            // Character set ECIs use 000000 - 000899
-            return CharacterSetECI.getCharacterSetECIByValue(value_Renamed);
-         }
-         return null;
-      }
-   }
-}
\ No newline at end of file
diff --git a/shadowsocks-csharp/3rd/zxing/qrcode/decoder/DecodedBitStreamParser.cs b/shadowsocks-csharp/3rd/zxing/qrcode/decoder/DecodedBitStreamParser.cs
index 77a0b2cc..189fb41f 100755
--- a/shadowsocks-csharp/3rd/zxing/qrcode/decoder/DecodedBitStreamParser.cs
+++ b/shadowsocks-csharp/3rd/zxing/qrcode/decoder/DecodedBitStreamParser.cs
@@ -54,7 +54,7 @@ namespace ZXing.QrCode.Internal
 
          try
          {
-            CharacterSetECI currentCharacterSetECI = null;
+            // CharacterSetECI currentCharacterSetECI = null;
             bool fc1InEffect = false;
             Mode mode;
             do
@@ -96,6 +96,7 @@ namespace ZXing.QrCode.Internal
                   }
                   else if (mode == Mode.ECI)
                   {
+                      /*
                      // Count doesn't apply to ECI
                      int value = parseECIValue(bits);
                      currentCharacterSetECI = CharacterSetECI.getCharacterSetECIByValue(value);
@@ -103,6 +104,7 @@ namespace ZXing.QrCode.Internal
                      {
                         return null;
                      }
+                       * */
                   }
                   else
                   {
@@ -135,7 +137,7 @@ namespace ZXing.QrCode.Internal
                         }
                         else if (mode == Mode.BYTE)
                         {
-                           if (!decodeByteSegment(bits, result, count, currentCharacterSetECI, byteSegments, hints))
+                           if (!decodeByteSegment(bits, result, count, byteSegments, hints))
                               return null;
                         }
                         else if (mode == Mode.KANJI)
@@ -301,7 +303,6 @@ namespace ZXing.QrCode.Internal
       private static bool decodeByteSegment(BitSource bits,
                                             StringBuilder result,
                                             int count,
-                                            CharacterSetECI currentCharacterSetECI,
                                             IList<byte[]> byteSegments,
                                             IDictionary<DecodeHintType, object> hints)
       {
@@ -317,19 +318,8 @@ namespace ZXing.QrCode.Internal
             readBytes[i] = (byte)bits.readBits(8);
          }
          String encoding;
-         if (currentCharacterSetECI == null)
-         {
-            // The spec isn't clear on this mode; see
-            // section 6.4.5: t does not say which encoding to assuming
-            // upon decoding. I have seen ISO-8859-1 used as well as
-            // Shift_JIS -- without anything like an ECI designator to
-            // give a hint.
-            encoding = StringUtils.guessEncoding(readBytes, hints);
-         }
-         else
-         {
-            encoding = currentCharacterSetECI.EncodingName;
-         }
+         encoding = StringUtils.guessEncoding(readBytes, hints);
+        
          try
          {
             result.Append(Encoding.GetEncoding(encoding).GetString(readBytes, 0, readBytes.Length));
diff --git a/shadowsocks-csharp/shadowsocks-csharp.csproj b/shadowsocks-csharp/shadowsocks-csharp.csproj
index cd5b2683..e5da1098 100755
--- a/shadowsocks-csharp/shadowsocks-csharp.csproj
+++ b/shadowsocks-csharp/shadowsocks-csharp.csproj
@@ -78,12 +78,10 @@
     <Compile Include="3rd\zxing\common\BitArray.cs" />
     <Compile Include="3rd\zxing\common\BitMatrix.cs" />
     <Compile Include="3rd\zxing\common\BitSource.cs" />
-    <Compile Include="3rd\zxing\common\CharacterSetECI.cs" />
     <Compile Include="3rd\zxing\common\DecoderResult.cs" />
     <Compile Include="3rd\zxing\common\DefaultGridSampler.cs" />
     <Compile Include="3rd\zxing\common\DetectorResult.cs" />
     <Compile Include="3rd\zxing\common\detector\MathUtils.cs" />
-    <Compile Include="3rd\zxing\common\ECI.cs" />
     <Compile Include="3rd\zxing\common\GlobalHistogramBinarizer.cs" />
     <Compile Include="3rd\zxing\common\GridSampler.cs" />
     <Compile Include="3rd\zxing\common\HybridBinarizer.cs" />