diff --git a/app/src/main/assets/romfs/0100000000000806 b/app/src/main/assets/romfs/0100000000000806
new file mode 100644
index 00000000..69b91fb9
Binary files /dev/null and b/app/src/main/assets/romfs/0100000000000806 differ
diff --git a/app/src/main/assets/romfs/0100000000000823 b/app/src/main/assets/romfs/0100000000000823
new file mode 100644
index 00000000..687472c1
Binary files /dev/null and b/app/src/main/assets/romfs/0100000000000823 differ
diff --git a/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.cpp b/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.cpp
index 3c44d444..c3c3fba7 100644
--- a/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.cpp
+++ b/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.cpp
@@ -69,6 +69,17 @@ namespace skyline::service::fssrv {
         return {};
     }
 
+    Result IFileSystemProxy::OpenDataStorageByDataId(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        auto storageId{request.Pop<StorageId>()};
+        request.Skip<std::array<u8, 7>>(); // 7-bytes padding
+        auto titleId{request.Pop<u64>()};
+
+        auto romFs{std::make_shared<IStorage>(state.os->assetFileSystem->OpenFile(fmt::format("romfs/{:016X}", titleId)), state, manager)};
+
+        manager.RegisterService(romFs, session, response);
+        return {};
+    }
+
     Result IFileSystemProxy::GetGlobalAccessLogMode(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
         response.Push<u32>(0);
         return {};
diff --git a/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.h b/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.h
index 09279ce6..1a65cc2c 100644
--- a/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.h
+++ b/app/src/main/cpp/skyline/services/fssrv/IFileSystemProxy.h
@@ -42,6 +42,15 @@ namespace skyline::service::fssrv {
     };
     static_assert(sizeof(SaveDataAttribute) == 0x40);
 
+    enum class StorageId : u8 {
+        None = 0,
+        Host = 1,
+        GameCard = 2,
+        NandSystem = 3,
+        NandUser = 4,
+        SdCard = 5,
+    };
+
     /**
      * @brief IFileSystemProxy or fsp-srv is responsible for providing handles to file systems
      * @url https://switchbrew.org/wiki/Filesystem_services#fsp-srv
@@ -77,6 +86,12 @@ namespace skyline::service::fssrv {
          */
         Result OpenDataStorageByCurrentProcess(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /**
+         * @brief Returns a handle to an instance of #IStorage
+         * @url https://switchbrew.org/wiki/Filesystem_services#OpenDataStorageByDataId
+         */
+        Result OpenDataStorageByDataId(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         /**
           * @brief Returns the filesystem log access mode
           * @url https://switchbrew.org/wiki/Filesystem_services#GetGlobalAccessLogMode
@@ -88,6 +103,7 @@ namespace skyline::service::fssrv {
             SFUNC(0x12, IFileSystemProxy, OpenSdCardFileSystem),
             SFUNC(0x33, IFileSystemProxy, OpenSaveDataFileSystem),
             SFUNC(0xC8, IFileSystemProxy, OpenDataStorageByCurrentProcess),
+            SFUNC(0xCA, IFileSystemProxy, OpenDataStorageByDataId),
             SFUNC(0x3ED, IFileSystemProxy, GetGlobalAccessLogMode)
         )
     };