diff --git a/src/Starward.Core/HoYoPlay/GameBranch.cs b/src/Starward.Core/HoYoPlay/GameBranch.cs
index ed13bbd7f..62dacbd6e 100644
--- a/src/Starward.Core/HoYoPlay/GameBranch.cs
+++ b/src/Starward.Core/HoYoPlay/GameBranch.cs
@@ -36,7 +36,7 @@ public class GameBranchPackage
     [JsonPropertyName("package_id")]
     public string PackageId { get; set; }
 
-
+    // main or pre_download
     [JsonPropertyName("branch")]
     public string Branch { get; set; }
 
diff --git a/src/Starward.Core/HoYoPlay/GameChunkBuild.cs b/src/Starward.Core/HoYoPlay/GameChunkBuild.cs
index 1ad7156ae..1fbbdded3 100644
--- a/src/Starward.Core/HoYoPlay/GameChunkBuild.cs
+++ b/src/Starward.Core/HoYoPlay/GameChunkBuild.cs
@@ -2,19 +2,24 @@
 
 namespace Starward.Core.HoYoPlay;
 
+
 public class GameChunkBuild
 {
 
-    // json string build_id
     [JsonPropertyName("build_id")]
     public string BuildId { get; set; }
 
 
-    // string tag
+    /// <summary>
+    /// 游戏版本
+    /// </summary>
     [JsonPropertyName("tag")]
     public string Tag { get; set; }
 
 
+    /// <summary>
+    /// 文件清单
+    /// </summary>
     [JsonPropertyName("manifests")]
     public List<GameChunkManifest> Manifests { get; set; }
 
@@ -22,43 +27,60 @@ public class GameChunkBuild
 }
 
 
-
+/// <summary>
+/// Chunk 下载模式文件清单
+/// </summary>
 public class GameChunkManifest
 {
-
-    // string category_id
+    /// <summary>
+    /// 资源ID
+    /// </summary>
     [JsonPropertyName("category_id")]
     public string CategoryId { get; set; }
 
-    // string category_name
+    /// <summary>
+    /// 资源名称
+    /// </summary>
     [JsonPropertyName("category_name")]
     public string CategoryName { get; set; }
 
-    // string matching_field
+    /// <summary>
+    /// 资源类型，game or 语音类型（zh-cn, en-us, ja-jp, ko-kr）
+    /// </summary>
     [JsonPropertyName("matching_field")]
     public string MatchingField { get; set; }
 
-    // gamechunkmanifestfile manifest
+    /// <summary>
+    /// 清单文件信息
+    /// </summary>
     [JsonPropertyName("manifest")]
     public GameChunkManifestFile Manifest { get; set; }
 
 
-    // gamechunkmanifesturl chunk_download
+    /// <summary>
+    /// 分块文件下载链接前缀
+    /// </summary>
     [JsonPropertyName("chunk_download")]
     public GameChunkManifestUrl ChunkDownload { get; set; }
 
 
-    // gamechunkmanifesturl manifest_download
+    /// <summary>
+    /// 清单文件下载链接前缀
+    /// </summary>
     [JsonPropertyName("manifest_download")]
     public GameChunkManifestUrl ManifestDownload { get; set; }
 
 
-    // gamechunkmanifeststats stats
+    /// <summary>
+    /// 文件统计信息
+    /// </summary>
     [JsonPropertyName("stats")]
     public GameChunkManifestStats Stats { get; set; }
 
 
-    // gamechunkmanifeststats deduplicated_stats
+    /// <summary>
+    /// 去重后的文件统计信息
+    /// </summary>
     [JsonPropertyName("deduplicated_stats")]
     public GameChunkManifestStats DeduplicatedStats { get; set; }
 
@@ -68,11 +90,15 @@ public class GameChunkManifest
 
 public class GameChunkManifestFile
 {
-
+    /// <summary>
+    /// 文件名，与下载链接前缀拼接为下载链接
+    /// </summary>
     [JsonPropertyName("id")]
     public string Id { get; set; }
 
-
+    /// <summary>
+    /// 解压后的MD5
+    /// </summary>
     [JsonPropertyName("checksum")]
     public string Checksum { get; set; }
 
@@ -90,26 +116,38 @@ public class GameChunkManifestFile
 
 
 
-
+/// <summary>
+/// 文件下载链接前缀
+/// </summary>
 public class GameChunkManifestUrl
 {
-
+    /// <summary>
+    /// 加密
+    /// </summary>
     [JsonPropertyName("encryption")]
     public int Encryption { get; set; }
 
-
+    /// <summary>
+    /// 密码
+    /// </summary>
     [JsonPropertyName("password")]
     public string Password { get; set; }
 
-
+    /// <summary>
+    /// 压缩
+    /// </summary>
     [JsonPropertyName("compression")]
     public int Compression { get; set; }
 
-
+    /// <summary>
+    /// 前缀
+    /// </summary>
     [JsonPropertyName("url_prefix")]
     public string UrlPrefix { get; set; }
 
-
+    /// <summary>
+    /// 后缀
+    /// </summary>
     [JsonPropertyName("url_suffix")]
     public string UrlSuffix { get; set; }
 
@@ -117,6 +155,7 @@ public class GameChunkManifestUrl
 
 
 
+
 public class GameChunkManifestStats
 {
 
@@ -139,4 +178,6 @@ public class GameChunkManifestStats
     [JsonNumberHandling(JsonNumberHandling.AllowReadingFromString | JsonNumberHandling.WriteAsString)]
     public int ChunkCount { get; set; }
 
+
 }
+
diff --git a/src/Starward.Core/HoYoPlay/GamePatchBuild.cs b/src/Starward.Core/HoYoPlay/GamePatchBuild.cs
new file mode 100644
index 000000000..15db31c58
--- /dev/null
+++ b/src/Starward.Core/HoYoPlay/GamePatchBuild.cs
@@ -0,0 +1,85 @@
+using System.Text.Json.Serialization;
+
+namespace Starward.Core.HoYoPlay;
+
+
+public class GamePatchBuild
+{
+
+    [JsonPropertyName("build_id")]
+    public string BuildId { get; set; }
+
+
+    [JsonPropertyName("patch_id")]
+    public string PatchId { get; set; }
+
+
+    /// <summary>
+    /// 游戏版本
+    /// </summary>
+    [JsonPropertyName("tag")]
+    public string Tag { get; set; }
+
+
+    /// <summary>
+    /// 文件清单
+    /// </summary>
+    [JsonPropertyName("manifests")]
+    public List<GamePatchManifest> Manifests { get; set; }
+
+
+}
+
+
+/// <summary>
+/// Chunk 下载模式补丁文件清单
+/// </summary>
+public class GamePatchManifest
+{
+    /// <summary>
+    /// 资源ID
+    /// </summary>
+    [JsonPropertyName("category_id")]
+    public string CategoryId { get; set; }
+
+    /// <summary>
+    /// 资源名称
+    /// </summary>
+    [JsonPropertyName("category_name")]
+    public string CategoryName { get; set; }
+
+    /// <summary>
+    /// 资源类型，game or 语音类型（zh-cn, en-us, ja-jp, ko-kr）
+    /// </summary>
+    [JsonPropertyName("matching_field")]
+    public string MatchingField { get; set; }
+
+    /// <summary>
+    /// 清单文件信息
+    /// </summary>
+    [JsonPropertyName("manifest")]
+    public GameChunkManifestFile Manifest { get; set; }
+
+
+    /// <summary>
+    /// 分块文件下载链接前缀
+    /// </summary>
+    [JsonPropertyName("diff_download")]
+    public GameChunkManifestUrl DiffDownload { get; set; }
+
+
+    /// <summary>
+    /// 清单文件下载链接前缀
+    /// </summary>
+    [JsonPropertyName("manifest_download")]
+    public GameChunkManifestUrl ManifestDownload { get; set; }
+
+
+    /// <summary>
+    /// 文件统计信息
+    /// </summary>
+    [JsonPropertyName("stats")]
+    public Dictionary<string, GameChunkManifestStats> Stats { get; set; }
+
+
+}
diff --git a/src/Starward.Core/HoYoPlay/HoYoPlayClient.cs b/src/Starward.Core/HoYoPlay/HoYoPlayClient.cs
index 336958799..0bae6145e 100644
--- a/src/Starward.Core/HoYoPlay/HoYoPlayClient.cs
+++ b/src/Starward.Core/HoYoPlay/HoYoPlayClient.cs
@@ -64,6 +64,25 @@ private async Task<T> CommonGetAsync<T>(string url, string node, CancellationTok
 
 
 
+    private async Task<T> CommonSendAsync<T>(HttpRequestMessage request, CancellationToken cancellationToken = default)
+    {
+        var response = await _httpClient.SendAsync(request, cancellationToken);
+        response.EnsureSuccessStatusCode();
+        var responseData = await response.Content.ReadFromJsonAsync(typeof(miHoYoApiWrapper<T>), HoYoPlayJsonContext.Default, cancellationToken) as miHoYoApiWrapper<T>;
+        if (responseData is null)
+        {
+            throw new miHoYoApiException(-1, "Can not parse the response body.");
+        }
+        if (responseData.Retcode != 0)
+        {
+            throw new miHoYoApiException(responseData.Retcode, responseData.Message);
+        }
+        return responseData.Data;
+    }
+
+
+
+
 
     private static string BuildUrl(string api, string launcherId, string language)
     {
@@ -455,7 +474,7 @@ public async Task<List<GameBranch>> GetGameBranchAsync(string launcherId, string
 
 
     /// <summary>
-    /// Chunk 下载模式清单
+    /// Chunk 下载模式文件清单
     /// </summary>
     /// <param name="gameBranch"></param>
     /// <param name="gameBranchPackage"></param>
@@ -467,17 +486,17 @@ public async Task<GameChunkBuild> GetGameChunkBuildAsync(GameBranch gameBranch,
         string? url = null;
         if (gameBranch.GameId.GameBiz.IsChinaServer())
         {
-            url = "https://api-takumi.mihoyo.com/downloader/sophon_chunk/api/getBuild?plat_app=ddxf5qt290cg";
+            url = "https://downloader-api.mihoyo.com/downloader/sophon_chunk/api/getBuild?";
         }
         if (gameBranch.GameId.GameBiz.IsGlobalServer())
         {
-            url = "https://sg-public-api.hoyoverse.com/downloader/sophon_chunk/api/getBuild?plat_app=ddxf6vlr1reo";
+            url = "https://sg-downloader-api.hoyoverse.com/downloader/sophon_chunk/api/getBuild?";
         }
         if (url is null)
         {
             throw new ArgumentOutOfRangeException(nameof(gameBranch), $"Unknown game biz ({gameBranch.GameId.GameBiz}).");
         }
-        url += $"&branch={gameBranchPackage.Branch}&package_id={gameBranchPackage.PackageId}&password={gameBranchPackage.Password}";
+        url += $"branch={gameBranchPackage.Branch}&package_id={gameBranchPackage.PackageId}&password={gameBranchPackage.Password}";
         return await CommonGetAsync<GameChunkBuild>(url, cancellationToken);
     }
 
@@ -485,7 +504,7 @@ public async Task<GameChunkBuild> GetGameChunkBuildAsync(GameBranch gameBranch,
 
 
     /// <summary>
-    /// Chunk 下载模式清单
+    /// Chunk 下载模式文件清单
     /// </summary>
     /// <param name="gameBranch"></param>
     /// <param name="gameBranchPackage"></param>
@@ -498,22 +517,52 @@ public async Task<GameChunkBuild> GetGameChunkBuildAsync(GameBranch gameBranch,
         string? url = null;
         if (gameBranch.GameId.GameBiz.IsChinaServer())
         {
-            url = "https://api-takumi.mihoyo.com/downloader/sophon_chunk/api/getBuild?plat_app=ddxf5qt290cg";
+            url = "https://downloader-api.mihoyo.com/downloader/sophon_chunk/api/getBuild?";
         }
         if (gameBranch.GameId.GameBiz.IsGlobalServer())
         {
-            url = "https://sg-public-api.hoyoverse.com/downloader/sophon_chunk/api/getBuild?plat_app=ddxf6vlr1reo";
+            url = "https://sg-downloader-api.hoyoverse.com/downloader/sophon_chunk/api/getBuild?";
         }
         if (url is null)
         {
             throw new ArgumentOutOfRangeException(nameof(gameBranch), $"Unknown game biz ({gameBranch.GameId.GameBiz}).");
         }
-        url += $"&branch={gameBranchPackage.Branch}&package_id={gameBranchPackage.PackageId}&password={gameBranchPackage.Password}&tag={version}";
+        url += $"branch={gameBranchPackage.Branch}&package_id={gameBranchPackage.PackageId}&password={gameBranchPackage.Password}&tag={version}";
         return await CommonGetAsync<GameChunkBuild>(url, cancellationToken);
     }
 
 
 
 
+    /// <summary>
+    /// Chunk 下载模式的增量更新补丁文件清单
+    /// </summary>
+    /// <param name="gameBranch"></param>
+    /// <param name="gameBranchPackage"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    /// <exception cref="ArgumentOutOfRangeException"></exception>
+    public async Task<GamePatchBuild> GetGameChunkPatchBuildAsync(GameBranch gameBranch, GameBranchPackage gameBranchPackage, CancellationToken cancellationToken = default)
+    {
+        string? url = null;
+        if (gameBranch.GameId.GameBiz.IsChinaServer())
+        {
+            url = "https://downloader-api.mihoyo.com/downloader/sophon_chunk/api/getPatchBuild?";
+        }
+        if (gameBranch.GameId.GameBiz.IsGlobalServer())
+        {
+            url = "https://sg-downloader-api.hoyoverse.com/downloader/sophon_chunk/api/getPatchBuild?";
+        }
+        if (url is null)
+        {
+            throw new ArgumentOutOfRangeException(nameof(gameBranch), $"Unknown game biz ({gameBranch.GameId.GameBiz}).");
+        }
+        url += $"branch={gameBranchPackage.Branch}&package_id={gameBranchPackage.PackageId}&password={gameBranchPackage.Password}";
+        var request = new HttpRequestMessage(HttpMethod.Post, url);
+        return await CommonSendAsync<GamePatchBuild>(request, cancellationToken);
+    }
+
+
+
 
 }
diff --git a/src/Starward.Core/HoYoPlay/HoYoPlayJsonContext.cs b/src/Starward.Core/HoYoPlay/HoYoPlayJsonContext.cs
index babefba66..970bb7c4f 100644
--- a/src/Starward.Core/HoYoPlay/HoYoPlayJsonContext.cs
+++ b/src/Starward.Core/HoYoPlay/HoYoPlayJsonContext.cs
@@ -14,6 +14,7 @@ namespace Starward.Core.HoYoPlay;
 [JsonSerializable(typeof(List<GameConfig>))]
 [JsonSerializable(typeof(List<GameBranch>))]
 [JsonSerializable(typeof(miHoYoApiWrapper<GameChunkBuild>))]
+[JsonSerializable(typeof(miHoYoApiWrapper<GamePatchBuild>))]
 
 internal partial class HoYoPlayJsonContext : JsonSerializerContext
 {