diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category2xx.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category2xx.cs
index 0109aca..f1bf715 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category2xx.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category2xx.cs
@@ -88,22 +88,30 @@ partial class Program
 
             // public save の fileSize を変更
             case 209:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE]++;
+                header.fileSizes[prop.indexPublicSave]++;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, NONE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
 
             // sub banner の fileSize を変更
             case 210:
-                header.fileSizes[(int)Utility.SectionIndex.SUB_BANNER]++;
+                header.fileSizes[prop.indexSubBanner]++;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, NONE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
 
+            // コンテンツ ID を変更
             case 211:
-                for (int i = 0; i < header.contentId.Length; i++)
+                if (prop.bkpType != BkpType.LEGACY)
                 {
-                    header.contentId[i]++;
+                    for (int i = 0; i < header.contentId.Length; i++)
+                    {
+                        header.contentId[i]++;
+                    }
+                }
+                else
+                {
+                    header.contentIdForLegacy++;
                 }
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, NONE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
@@ -123,7 +131,7 @@ partial class Program
 
             // public save の fileSize, TMD Reserved の publicSaveSize を変更
             case 214:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE]++;
+                header.fileSizes[prop.indexPublicSave]++;
                 header.tmdReserved.publicSaveSize++;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, NONE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category4xx.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category4xx.cs
index 610a40e..0e98923 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category4xx.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category4xx.cs
@@ -72,28 +72,28 @@ partial class Program
 
             // public save の fileSize を大きくした上で、public save の前に不正なデータを入れる
             case 406:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_PUBLIC_SAVE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
 
             // public save の fileSize を大きくした上で、public save の後ろに不正なデータを入れる
             case 407:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_PUBLIC_SAVE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
 
             // サブバナーの fileSize を大きくした上で、サブバナーの前に不正なデータを入れる
             case 408:
-                header.fileSizes[(int)Utility.SectionIndex.SUB_BANNER] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_SUB_BANNER, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
 
             // サブバナーの fileSize を大きくした上で、サブバナーの後ろに不正なデータを入れる
             case 409:
-                header.fileSizes[(int)Utility.SectionIndex.SUB_BANNER] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexSubBanner] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_SUB_BANNER, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
@@ -112,7 +112,7 @@ partial class Program
 
             // public save の fileSize, TMD Reserved の publicSave を変更し、public save の前にデータを入れる
             case 412:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 header.tmdReserved.publicSaveSize += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_PUBLIC_SAVE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
@@ -120,7 +120,7 @@ partial class Program
 
             // public save の fileSize, TMD Reserved の publicSave を変更し、public save の後ろにデータを入れる
             case 413:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 header.tmdReserved.publicSaveSize += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_PUBLIC_SAVE, NC_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category5xx.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category5xx.cs
index dafc6cf..8b839c2 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/Category5xx.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/Category5xx.cs
@@ -77,7 +77,7 @@ partial class Program
             // public save の fileSize を大きくした上で、public save の前に不正なデータを入れる
             // public save ブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 506:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_PUBLIC_SAVE, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
@@ -85,7 +85,7 @@ partial class Program
             // public save の fileSize を大きくした上で、public save の後ろに不正なデータを入れる
             // public save ブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 507:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_PUBLIC_SAVE, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
@@ -93,7 +93,7 @@ partial class Program
             // サブバナーの fileSize を大きくした上で、サブバナーの前に不正なデータを入れる
             // サブバナーブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 508:
-                header.fileSizes[(int)Utility.SectionIndex.SUB_BANNER] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexSubBanner] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_SUB_BANNER, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
@@ -101,7 +101,7 @@ partial class Program
             // サブバナーの fileSize を大きくした上で、サブバナーの後ろに不正なデータを入れる
             // サブバナーブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 509:
-                header.fileSizes[(int)Utility.SectionIndex.SUB_BANNER] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexSubBanner] += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_SUB_BANNER, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
                 break;
@@ -121,7 +121,7 @@ partial class Program
             // public save の fileSize, TMD Reserved の publicSave を変更し、public save の前にデータを入れる
             // public save ブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 512:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 header.tmdReserved.publicSaveSize += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, FRONT_PUBLIC_SAVE, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
@@ -130,7 +130,7 @@ partial class Program
             // public save の fileSize, TMD Reserved の publicSave を変更し、public save の後ろにデータを入れる
             // public save ブロックの MAC を更新し、署名ブロック内ハッシュも更新する
             case 513:
-                header.fileSizes[(int)Utility.SectionIndex.PUBLIC_SAVE] += IMPROPER_DATA_SIZE;
+                header.fileSizes[prop.indexPublicSave] += IMPROPER_DATA_SIZE;
                 header.tmdReserved.publicSaveSize += IMPROPER_DATA_SIZE;
                 outData = MergeEncryptBody(blocksForFalsifying, prop, improperData, REAR_PUBLIC_SAVE, CHG_MAC_AND_HASHSET);
                 OutputFalsifiedData(improperNo, prop.outFolderPath, outData);
diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/Falsify.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/Falsify.cs
index 1ce4a65..834f47c 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/Falsify.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/Falsify.cs
@@ -71,7 +71,7 @@ partial class Program
     /// <param name="dataBlocks">変更対象となる署名ブロックを有するBlocks</param>
     /// <param name="hash">新しいハッシュ値</param>
     /// <param name="section">変更するブロックセクション</param>
-    static void ChangeHashSet(Blocks dataBlocks, byte[] hash, int section)
+    static void ChangeHashSet(Blocks dataBlocks, byte[] hash, int section, BkpType type)
     {
         Debug.Assert((section <= BLOCK_NUM - 1) && (section >= 0));
 
@@ -98,11 +98,25 @@ partial class Program
                     break;
 
                 case SECTION_PUBLIC_SAVE:
-                    hash.CopyTo(signature.digest.section[(int)Utility.SectionIndex.PUBLIC_SAVE], 0);
+                    if (type != BkpType.LEGACY)
+                    {
+                        hash.CopyTo(signature.digest.section[(int)Utility.SectionIndex.PUBLIC_SAVE], 0);
+                    }
+                    else
+                    {
+                        hash.CopyTo(signature.digest.section[(int)Utility.SectionIndexLegacy.PUBLIC_SAVE], 0);
+                    }
                     break;
 
                 case SECTION_SUB_BANNER:
-                    hash.CopyTo(signature.digest.section[(int)Utility.SectionIndex.SUB_BANNER], 0);
+                    if (type != BkpType.LEGACY)
+                    {
+                        hash.CopyTo(signature.digest.section[(int)Utility.SectionIndex.SUB_BANNER], 0);
+                    }
+                    else
+                    {
+                        hash.CopyTo(signature.digest.section[(int)Utility.SectionIndexLegacy.SUB_BANNER], 0);
+                    }
                     break;
 
                 case SECTION_PRIVATE_SAVE:
@@ -227,7 +241,7 @@ partial class Program
                     if (dataBlocks[i].body != null)
                     {
                         encryptedBlocks[i] = EncryptBlock(dataBlocks, i, prop, impData, insertPos, byteMac[i], byteHash[i]); // ブロックを暗号化＆結合
-                        ChangeHashSet(dataBlocks, byteHash[i], i); // ハッシュセットを更新
+                        ChangeHashSet(dataBlocks, byteHash[i], i, prop.bkpType); // ハッシュセットを更新
                     }
                     else
                     {
diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/Properties.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/Properties.cs
index fafb379..b5771df 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/Properties.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/Properties.cs
@@ -14,6 +14,8 @@ namespace FalsifyTwlBackup
         public byte[] macKeyData;      // MAC生成のための鍵データ
 
         public BkpType bkpType;        // バックアップの形式。
+        public int indexPublicSave;    // パブリックセーブデータのインデックス
+        public int indexSubBanner;     // サブバナーのインデックス
 
         public string outFolderPath;   // 出力フォルダ名
 
diff --git a/TwlBkpCheck/Windows/FalsifyTwlBackup/main.cs b/TwlBkpCheck/Windows/FalsifyTwlBackup/main.cs
index 7d6969c..e7e6961 100644
--- a/TwlBkpCheck/Windows/FalsifyTwlBackup/main.cs
+++ b/TwlBkpCheck/Windows/FalsifyTwlBackup/main.cs
@@ -229,6 +229,8 @@ partial class Program
             return;
         }
         else
+
+
         {
             // 拡張子の判定
             CheckExtension(args[0], ".bin"); // 入力ファイル名
@@ -258,10 +260,17 @@ partial class Program
         
         int argTypeIndex = (isSpecifyMode) ? 6 : 4;
         prop.bkpType = BkpType.NORMAL;
+        prop.indexPublicSave = (int)Utility.SectionIndex.PUBLIC_SAVE;
+        prop.indexSubBanner = (int)Utility.SectionIndex.SUB_BANNER;
         if (args.Length >= argTypeIndex + 1 && args[argTypeIndex - 1].ToUpper().TrimStart('-') == "TYPE")
         {
             prop.bkpType = GetBackupType(args[argTypeIndex]);
         }
+        if (prop.bkpType == BkpType.LEGACY)
+        {
+            prop.indexPublicSave = (int)Utility.SectionIndexLegacy.PUBLIC_SAVE;
+            prop.indexSubBanner = (int)Utility.SectionIndexLegacy.SUB_BANNER;
+        }
 
         // バックアップデータの読み込み
         byte[] twlBackupData = File.ReadAllBytes(twlBackupName);