diff --git a/libraries/libstratosphere/include/stratosphere/fs/fs_bis.hpp b/libraries/libstratosphere/include/stratosphere/fs/fs_bis.hpp
index 01357eb45..4bdf4cf4c 100644
--- a/libraries/libstratosphere/include/stratosphere/fs/fs_bis.hpp
+++ b/libraries/libstratosphere/include/stratosphere/fs/fs_bis.hpp
@@ -44,6 +44,8 @@ namespace ams::fs {
        SystemProperEncryption           = 32,
        SystemProperPartition            = 33,
        SignedSystemPartitionOnSafeMode  = 34,
+       DeviceTreeBlob                   = 35,
+       System0                          = 36,
    };
 
    const char *GetBisMountName(BisPartitionId id);
diff --git a/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage.hpp b/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage.hpp
index 9fa587a52..d2c378a52 100644
--- a/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage.hpp
+++ b/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage.hpp
@@ -15,16 +15,10 @@
  */
 #pragma once
 #include <stratosphere/fs/fs_common.hpp>
+#include <stratosphere/fs/fs_content_storage_id.hpp>
 
 namespace ams::fs {
 
-    /* ACCURATE_TO_VERSION: Unknown */
-    enum class ContentStorageId : u32 {
-        System = 0,
-        User   = 1,
-        SdCard = 2,
-    };
-
     constexpr inline const char * const ContentStorageDirectoryName = "Contents";
 
     const char *GetContentStorageMountName(ContentStorageId id);
diff --git a/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage_id.hpp b/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage_id.hpp
new file mode 100644
index 000000000..9a4390877
--- /dev/null
+++ b/libraries/libstratosphere/include/stratosphere/fs/fs_content_storage_id.hpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::fs {
+
+    /* ACCURATE_TO_VERSION: 16.2.0.0 */
+    enum class ContentStorageId : u32 {
+        System  = 0,
+        User    = 1,
+        SdCard  = 2,
+        System0 = 3,
+    };
+
+}
diff --git a/libraries/libstratosphere/include/stratosphere/ncm/ncm_api.hpp b/libraries/libstratosphere/include/stratosphere/ncm/ncm_api.hpp
index 50af90509..75e8f17a1 100644
--- a/libraries/libstratosphere/include/stratosphere/ncm/ncm_api.hpp
+++ b/libraries/libstratosphere/include/stratosphere/ncm/ncm_api.hpp
@@ -17,6 +17,7 @@
 #include <stratosphere/ncm/ncm_content_meta_database.hpp>
 #include <stratosphere/ncm/ncm_content_storage.hpp>
 #include <stratosphere/ncm/ncm_i_content_manager.hpp>
+#include <stratosphere/fs/fs_content_storage_id.hpp>
 
 namespace ams::ncm {
 
@@ -46,6 +47,8 @@ namespace ams::ncm {
 
     Result InvalidateRightsIdCache();
 
+    Result ActivateFsContentStorage(fs::ContentStorageId fs_content_storage_id);
+
     /* Deprecated API. */
     Result CloseContentStorageForcibly(StorageId storage_id);
     Result CloseContentMetaDatabaseForcibly(StorageId storage_id);
diff --git a/libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_impl.hpp b/libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_impl.hpp
index 748202a79..b34cfd9cd 100644
--- a/libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_impl.hpp
+++ b/libraries/libstratosphere/include/stratosphere/ncm/ncm_content_manager_impl.hpp
@@ -151,6 +151,7 @@ namespace ams::ncm {
             Result InactivateContentMetaDatabase(StorageId storage_id);
             Result InvalidateRightsIdCache();
             Result GetMemoryReport(sf::Out<MemoryReport> out);
+            Result ActivateFsContentStorage(fs::ContentStorageId fs_content_storage_id);
     };
     static_assert(IsIContentManager<ContentManagerImpl>);
 
diff --git a/libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_manager.hpp b/libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_manager.hpp
index 75ca42304..c974689b3 100644
--- a/libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_manager.hpp
+++ b/libraries/libstratosphere/include/stratosphere/ncm/ncm_i_content_manager.hpp
@@ -17,6 +17,7 @@
 #include <stratosphere/ncm/ncm_i_content_storage.hpp>
 #include <stratosphere/ncm/ncm_i_content_meta_database.hpp>
 #include <stratosphere/ncm/ncm_memory_report.hpp>
+#include <stratosphere/fs/fs_content_storage_id.hpp>
 
 #define AMS_NCM_I_CONTENT_MANAGER_INTERFACE_INFO(C, H)                                                                                                                                                                        \
     AMS_SF_METHOD_INFO(C, H,  0, Result, CreateContentStorage,             (ncm::StorageId storage_id),                                                            (storage_id))                                              \
@@ -33,6 +34,7 @@
     AMS_SF_METHOD_INFO(C, H, 11, Result, ActivateContentMetaDatabase,      (ncm::StorageId storage_id),                                                            (storage_id),      hos::Version_2_0_0)                     \
     AMS_SF_METHOD_INFO(C, H, 12, Result, InactivateContentMetaDatabase,    (ncm::StorageId storage_id),                                                            (storage_id),      hos::Version_2_0_0)                     \
     AMS_SF_METHOD_INFO(C, H, 13, Result, InvalidateRightsIdCache,          (),                                                                                     (),                hos::Version_9_0_0)                     \
-    AMS_SF_METHOD_INFO(C, H, 14, Result, GetMemoryReport,                  (sf::Out<ncm::MemoryReport> out),                                                       (out),             hos::Version_10_0_0)
+    AMS_SF_METHOD_INFO(C, H, 14, Result, GetMemoryReport,                  (sf::Out<ncm::MemoryReport> out),                                                       (out),             hos::Version_10_0_0)                    \
+    AMS_SF_METHOD_INFO(C, H, 15, Result, ActivateFsContentStorage,         (fs::ContentStorageId fs_storage_id),                                                   (fs_storage_id)) /* Technically min 16.0.0, but used. */
 
 AMS_SF_DEFINE_INTERFACE(ams::ncm, IContentManager, AMS_NCM_I_CONTENT_MANAGER_INTERFACE_INFO, 0xFDB4FFE1);
diff --git a/libraries/libstratosphere/include/stratosphere/ncm/ncm_system_content_meta_id.hpp b/libraries/libstratosphere/include/stratosphere/ncm/ncm_system_content_meta_id.hpp
index 9a470b38f..b02c38fc5 100644
--- a/libraries/libstratosphere/include/stratosphere/ncm/ncm_system_content_meta_id.hpp
+++ b/libraries/libstratosphere/include/stratosphere/ncm/ncm_system_content_meta_id.hpp
@@ -98,6 +98,7 @@ namespace ams::ncm {
         static const SystemProgramId Pgl;
         static const SystemProgramId Omm;
         static const SystemProgramId Eth;
+        static const SystemProgramId Ngc;
 
         static const SystemProgramId End;
 
@@ -205,6 +206,7 @@ namespace ams::ncm {
     inline constexpr const SystemProgramId SystemProgramId::Pgl         = { 0x0100000000000042ul };
     inline constexpr const SystemProgramId SystemProgramId::Omm         = { 0x0100000000000045ul };
     inline constexpr const SystemProgramId SystemProgramId::Eth         = { 0x0100000000000046ul };
+    inline constexpr const SystemProgramId SystemProgramId::Ngc         = { 0x0100000000000050ul };
 
     inline constexpr const SystemProgramId SystemProgramId::End   = { 0x01000000000007FFul };
 
diff --git a/libraries/libstratosphere/source/boot2/boot2_api.board.nintendo_nx.cpp b/libraries/libstratosphere/source/boot2/boot2_api.board.nintendo_nx.cpp
index 005e38e95..e5f27fce6 100644
--- a/libraries/libstratosphere/source/boot2/boot2_api.board.nintendo_nx.cpp
+++ b/libraries/libstratosphere/source/boot2/boot2_api.board.nintendo_nx.cpp
@@ -74,6 +74,7 @@ namespace ams::boot2 {
             ncm::SystemProgramId::Profiler,    /* profiler */
             ncm::SystemProgramId::Sdb,         /* sdb */
             ncm::SystemProgramId::Olsc,        /* olsc */
+            ncm::SystemProgramId::Ngc,         /* ngc */
             ncm::SystemProgramId::Ngct,        /* ngct */
         };
         constexpr size_t NumAdditionalLaunchPrograms = util::size(AdditionalLaunchPrograms);
@@ -115,6 +116,7 @@ namespace ams::boot2 {
             ncm::SystemProgramId::Profiler,    /* profiler */
             ncm::SystemProgramId::Sdb,         /* sdb */
             ncm::SystemProgramId::Olsc,        /* olsc */
+            ncm::SystemProgramId::Ngc,         /* ngc */
             ncm::SystemProgramId::Ngct,        /* ngct */
         };
         constexpr size_t NumAdditionalMaintenanceLaunchPrograms = util::size(AdditionalMaintenanceLaunchPrograms);
@@ -399,6 +401,9 @@ namespace ams::boot2 {
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Usb, ncm::StorageId::BuiltInSystem), 0);
         }
 
+        /* Activate the system fs content storage. */
+        R_ABORT_UNLESS(ncm::ActivateFsContentStorage(fs::ContentStorageId::System));
+
         /* Find out whether we are maintenance mode. */
         const bool maintenance = IsMaintenanceMode();
         if (maintenance) {
diff --git a/libraries/libstratosphere/source/fs/fs_access_log.cpp b/libraries/libstratosphere/source/fs/fs_access_log.cpp
index 18a760b61..157e1ca38 100644
--- a/libraries/libstratosphere/source/fs/fs_access_log.cpp
+++ b/libraries/libstratosphere/source/fs/fs_access_log.cpp
@@ -118,6 +118,7 @@ namespace ams::fs::impl {
             ADD_ENUM_CASE(User);
             ADD_ENUM_CASE(System);
             ADD_ENUM_CASE(SdCard);
+            ADD_ENUM_CASE(System0);
             default: return ToValueString(static_cast<int>(id));
         }
     }
@@ -171,6 +172,8 @@ namespace ams::fs::impl {
             ADD_ENUM_CASE(System);
             ADD_ENUM_CASE(SystemProperEncryption);
             ADD_ENUM_CASE(SystemProperPartition);
+            ADD_ENUM_CASE(DeviceTreeBlob);
+            ADD_ENUM_CASE(System0);
             default: return ToValueString(static_cast<int>(id));
         }
     }
diff --git a/libraries/libstratosphere/source/fs/impl/fs_id_string_impl.os.generic.cpp b/libraries/libstratosphere/source/fs/impl/fs_id_string_impl.os.generic.cpp
index 072fee676..c1e99b108 100644
--- a/libraries/libstratosphere/source/fs/impl/fs_id_string_impl.os.generic.cpp
+++ b/libraries/libstratosphere/source/fs/impl/fs_id_string_impl.os.generic.cpp
@@ -21,7 +21,7 @@ namespace ams::fs::impl {
     #define ADD_ENUM_CASE(v) case v: return #v
 
     template<> const char *IdString::ToString<pkg1::KeyGeneration>(pkg1::KeyGeneration id) {
-        static_assert(pkg1::KeyGeneration_Current == pkg1::KeyGeneration_15_0_0);
+        static_assert(pkg1::KeyGeneration_Current == pkg1::KeyGeneration_16_0_0);
         switch (id) {
             using enum pkg1::KeyGeneration;
             case KeyGeneration_1_0_0:  return "1.0.0-2.3.0";
@@ -38,7 +38,8 @@ namespace ams::fs::impl {
             case KeyGeneration_12_1_0: return "12.1.0";
             case KeyGeneration_13_0_0: return "13.0.0-13.2.1";
             case KeyGeneration_14_0_0: return "14.0.0-14.1.2";
-            case KeyGeneration_15_0_0: return "15.0.0-";
+            case KeyGeneration_15_0_0: return "15.0.0-15.0.1";
+            case KeyGeneration_16_0_0: return "16.0.0-";
             default: return "Unknown";
         }
     }
diff --git a/libraries/libstratosphere/source/ncm/ncm_api.cpp b/libraries/libstratosphere/source/ncm/ncm_api.cpp
index e26492d2e..684a55a72 100644
--- a/libraries/libstratosphere/source/ncm/ncm_api.cpp
+++ b/libraries/libstratosphere/source/ncm/ncm_api.cpp
@@ -114,6 +114,10 @@ namespace ams::ncm {
         R_RETURN(g_content_manager->InvalidateRightsIdCache());
     }
 
+    Result ActivateFsContentStorage(fs::ContentStorageId fs_content_storage_id) {
+        R_RETURN(g_content_manager->ActivateFsContentStorage(fs_content_storage_id));
+    }
+
     /* Deprecated API. */
     Result CloseContentStorageForcibly(StorageId storage_id) {
         AMS_ABORT_UNLESS(hos::GetVersion() == hos::Version_1_0_0);
diff --git a/libraries/libstratosphere/source/ncm/ncm_content_manager_impl.cpp b/libraries/libstratosphere/source/ncm/ncm_content_manager_impl.cpp
index f93883924..99857bec3 100644
--- a/libraries/libstratosphere/source/ncm/ncm_content_manager_impl.cpp
+++ b/libraries/libstratosphere/source/ncm/ncm_content_manager_impl.cpp
@@ -675,6 +675,12 @@ namespace ams::ncm {
         R_SUCCEED();
     }
 
+    Result ContentManagerImpl::ActivateFsContentStorage(fs::ContentStorageId fs_content_storage_id) {
+        /* TODO */
+        AMS_UNUSED(fs_content_storage_id);
+        R_SUCCEED();
+    }
+
     Result ContentManagerImpl::GetMemoryReport(sf::Out<MemoryReport> out) {
         /* Populate content meta resource states. */
         MemoryReport report = {
diff --git a/libraries/libstratosphere/source/ncm/ncm_remote_content_manager_impl.hpp b/libraries/libstratosphere/source/ncm/ncm_remote_content_manager_impl.hpp
index 25b412d6b..e9ee891ad 100644
--- a/libraries/libstratosphere/source/ncm/ncm_remote_content_manager_impl.hpp
+++ b/libraries/libstratosphere/source/ncm/ncm_remote_content_manager_impl.hpp
@@ -99,6 +99,10 @@ namespace ams::ncm {
                 AMS_UNUSED(out);
                 AMS_ABORT();
             }
+
+            Result ActivateFsContentStorage(fs::ContentStorageId fs_content_storage_id) {
+                R_RETURN(::ncmActivateFsContentStorage(static_cast<::FsContentStorageId>(util::ToUnderlying(fs_content_storage_id))));
+            }
     };
     static_assert(ncm::IsIContentManager<RemoteContentManagerImpl>);
     #endif
diff --git a/stratosphere/boot2/boot2.json b/stratosphere/boot2/boot2.json
index d30b7ebc1..e98ff3d8e 100644
--- a/stratosphere/boot2/boot2.json
+++ b/stratosphere/boot2/boot2.json
@@ -16,7 +16,7 @@
         "permissions":    "0xFFFFFFFFFFFFFFFF"
     },
     "service_host": ["*"],
-    "service_access": ["fsp-srv", "gpio", "htc", "lr", "pm:bm", "pm:shell", "pm:info", "set:sys"],
+    "service_access": ["fsp-srv", "gpio", "htc", "lr", "ncm", "pm:bm", "pm:shell", "pm:info", "set:sys"],
     "kernel_capabilities": [
         {
             "type": "kernel_flags",
diff --git a/stratosphere/boot2/source/boot2_main.cpp b/stratosphere/boot2/source/boot2_main.cpp
index 57ef0453f..6a09b136e 100644
--- a/stratosphere/boot2/source/boot2_main.cpp
+++ b/stratosphere/boot2/source/boot2_main.cpp
@@ -61,6 +61,7 @@ namespace ams {
             R_ABORT_UNLESS(pmshellInitialize());
             R_ABORT_UNLESS(setsysInitialize());
             gpio::Initialize();
+            ncm::Initialize();
 
             /* Mount the SD card. */
             R_ABORT_UNLESS(fs::MountSdCard("sdmc"));