diff --git a/libraries/libstratosphere/include/stratosphere/fssrv/fssrv_file_system_proxy_impl.hpp b/libraries/libstratosphere/include/stratosphere/fssrv/fssrv_file_system_proxy_impl.hpp
index 0ddba8f7c..64d43c1d2 100644
--- a/libraries/libstratosphere/include/stratosphere/fssrv/fssrv_file_system_proxy_impl.hpp
+++ b/libraries/libstratosphere/include/stratosphere/fssrv/fssrv_file_system_proxy_impl.hpp
@@ -147,7 +147,8 @@ namespace ams::fssrv {
             /* fsp-ldr */
             Result OpenCodeFileSystemDeprecated(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const fssrv::sf::Path &path, ncm::ProgramId program_id);
             Result OpenCodeFileSystemDeprecated2(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, ncm::ProgramId program_id);
-            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id);
+            Result OpenCodeFileSystemDeprecated3(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id);
+            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const ams::sf::OutBuffer &out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id);
             Result IsArchivedProgram(ams::sf::Out<bool> out, u64 process_id);
     };
     static_assert(sf::IsIFileSystemProxy<FileSystemProxyImpl>);
@@ -166,7 +167,12 @@ namespace ams::fssrv {
                 R_THROW(fs::ResultPortAcceptableCountLimited());
             }
 
-            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+            Result OpenCodeFileSystemDeprecated3(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+                AMS_UNUSED(out_fs, out_verif, path, attr, program_id);
+                R_THROW(fs::ResultPortAcceptableCountLimited());
+            }
+
+            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const ams::sf::OutBuffer &out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
                 AMS_UNUSED(out_fs, out_verif, path, attr, program_id);
                 R_THROW(fs::ResultPortAcceptableCountLimited());
             }
diff --git a/libraries/libstratosphere/include/stratosphere/fssrv/sf/fssrv_sf_i_file_system_proxy_for_loader.hpp b/libraries/libstratosphere/include/stratosphere/fssrv/sf/fssrv_sf_i_file_system_proxy_for_loader.hpp
index 4ba1f0a8f..fef147445 100644
--- a/libraries/libstratosphere/include/stratosphere/fssrv/sf/fssrv_sf_i_file_system_proxy_for_loader.hpp
+++ b/libraries/libstratosphere/include/stratosphere/fssrv/sf/fssrv_sf_i_file_system_proxy_for_loader.hpp
@@ -20,11 +20,12 @@
 #include <stratosphere/fs/fs_code_verification_data.hpp>
 #include <stratosphere/fs/fs_content_attributes.hpp>
 
-/* ACCURATE_TO_VERSION: 13.4.0.0 */
+/* ACCURATE_TO_VERSION: 17.5.0.0 */
 #define AMS_FSSRV_I_FILE_SYSTEM_PROXY_FOR_LOADER_INTERFACE_INFO(C, H)                                                                                                                                                                                                                                                                                                      \
     AMS_SF_METHOD_INFO(C, H, 0, Result, OpenCodeFileSystemDeprecated,  (ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const fssrv::sf::Path &path, ncm::ProgramId program_id),                                                                               (out_fs, path, program_id),                  hos::Version_Min,    hos::Version_9_2_0)  \
     AMS_SF_METHOD_INFO(C, H, 0, Result, OpenCodeFileSystemDeprecated2, (ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, ncm::ProgramId program_id),                             (out_fs, out_verif, path, program_id),       hos::Version_10_0_0, hos::Version_15_0_1) \
-    AMS_SF_METHOD_INFO(C, H, 0, Result, OpenCodeFileSystem,            (ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id), (out_fs, out_verif, path, attr, program_id), hos::Version_16_0_0)                      \
+    AMS_SF_METHOD_INFO(C, H, 0, Result, OpenCodeFileSystemDeprecated3, (ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id), (out_fs, out_verif, path, attr, program_id), hos::Version_16_0_0, hos::Version_16_0_3) \
+    AMS_SF_METHOD_INFO(C, H, 0, Result, OpenCodeFileSystem,            (ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const ams::sf::OutBuffer &out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id),              (out_fs, out_verif, path, attr, program_id), hos::Version_17_0_0)                      \
     AMS_SF_METHOD_INFO(C, H, 1, Result, IsArchivedProgram,             (ams::sf::Out<bool> out, u64 process_id),                                                                                                                                                                    (out, process_id))                                                                     \
     AMS_SF_METHOD_INFO(C, H, 2, Result, SetCurrentProcess,             (const ams::sf::ClientProcessId &client_pid),                                                                                                                                                                (client_pid),                                hos::Version_4_0_0)
 
diff --git a/libraries/libstratosphere/source/fs/fs_code.cpp b/libraries/libstratosphere/source/fs/fs_code.cpp
index 23fa37a13..a8015cd6a 100644
--- a/libraries/libstratosphere/source/fs/fs_code.cpp
+++ b/libraries/libstratosphere/source/fs/fs_code.cpp
@@ -79,7 +79,7 @@ namespace ams::fs {
             R_TRY(fsp->SetCurrentProcess({}));
 
             sf::SharedPointer<fssrv::sf::IFileSystem> fs;
-            R_TRY(fsp->OpenCodeFileSystem(std::addressof(fs), out_verification_data, sf_path, attr, program_id));
+            R_TRY(fsp->OpenCodeFileSystem(std::addressof(fs), ams::sf::OutBuffer(out_verification_data, sizeof(*out_verification_data)), sf_path, attr, program_id));
 
             /* Allocate a new filesystem wrapper. */
             auto fsa = std::make_unique<impl::FileSystemServiceObjectAdapter>(std::move(fs));
diff --git a/libraries/libstratosphere/source/fs/fs_remote_file_system_proxy_for_loader.hpp b/libraries/libstratosphere/source/fs/fs_remote_file_system_proxy_for_loader.hpp
index fff9ba88c..71edaeb4f 100644
--- a/libraries/libstratosphere/source/fs/fs_remote_file_system_proxy_for_loader.hpp
+++ b/libraries/libstratosphere/source/fs/fs_remote_file_system_proxy_for_loader.hpp
@@ -47,7 +47,15 @@ namespace ams::fs {
                 R_SUCCEED();
             }
 
-            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+            Result OpenCodeFileSystemDeprecated3(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+                ::FsFileSystem fs;
+                R_TRY(fsldrOpenCodeFileSystem(reinterpret_cast<::FsCodeInfo *>(out_verif.GetPointer()), program_id.value, path.str, static_cast<::FsContentAttributes>(static_cast<u8>(attr)), std::addressof(fs)));
+
+                out_fs.SetValue(ObjectFactory::CreateSharedEmplaced<fssrv::sf::IFileSystem, fssrv::impl::RemoteFileSystem>(fs));
+                R_SUCCEED();
+            }
+
+            Result OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const ams::sf::OutBuffer &out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
                 ::FsFileSystem fs;
                 R_TRY(fsldrOpenCodeFileSystem(reinterpret_cast<::FsCodeInfo *>(out_verif.GetPointer()), program_id.value, path.str, static_cast<::FsContentAttributes>(static_cast<u8>(attr)), std::addressof(fs)));
 
diff --git a/libraries/libstratosphere/source/fssrv/fssrv_file_system_proxy_impl.cpp b/libraries/libstratosphere/source/fssrv/fssrv_file_system_proxy_impl.cpp
index 75b7b7276..c3336bfb7 100644
--- a/libraries/libstratosphere/source/fssrv/fssrv_file_system_proxy_impl.cpp
+++ b/libraries/libstratosphere/source/fssrv/fssrv_file_system_proxy_impl.cpp
@@ -465,7 +465,12 @@ namespace ams::fssrv {
         AMS_UNUSED(out_fs, out_verif, path, program_id);
     }
 
-    Result FileSystemProxyImpl::OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+    Result FileSystemProxyImpl::OpenCodeFileSystemDeprecated3(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, ams::sf::Out<fs::CodeVerificationData> out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
+        AMS_ABORT("TODO");
+        AMS_UNUSED(out_fs, out_verif, path, attr, program_id);
+    }
+
+    Result FileSystemProxyImpl::OpenCodeFileSystem(ams::sf::Out<ams::sf::SharedPointer<fssrv::sf::IFileSystem>> out_fs, const ams::sf::OutBuffer &out_verif, const fssrv::sf::Path &path, fs::ContentAttributes attr, ncm::ProgramId program_id) {
         AMS_ABORT("TODO");
         AMS_UNUSED(out_fs, out_verif, path, attr, program_id);
     }