diff --git a/stratosphere/fs_mitm/source/fsmitm_service.cpp b/stratosphere/fs_mitm/source/fsmitm_service.cpp
index b8384d26c..ebb485c88 100644
--- a/stratosphere/fs_mitm/source/fsmitm_service.cpp
+++ b/stratosphere/fs_mitm/source/fsmitm_service.cpp
@@ -106,7 +106,7 @@ Result FsMitmService::OpenBisStorage(Out<std::shared_ptr<IStorageInterface>> out
                 /* PRODINFO should *never* be writable. */
                 storage = std::make_shared<IStorageInterface>(new ROProxyStorage(bis_storage));
             } else {
-                if (allow_writes) {
+                if (!allow_writes) {
                     storage = std::make_shared<IStorageInterface>(new ROProxyStorage(bis_storage));
                 } else {
                     /* Sysmodules should still be allowed to read and write. */
@@ -128,6 +128,10 @@ Result FsMitmService::OpenDataStorageByCurrentProcess(Out<std::shared_ptr<IStora
     u32 out_domain_id = 0;
     Result rc = 0;
     
+    if (!this->should_override_contents) {
+        return RESULT_FORWARD_TO_SESSION;
+    }
+    
     bool has_cache = StorageCacheGetEntry(this->title_id, &storage);
     
     ON_SCOPE_EXIT {
@@ -191,6 +195,10 @@ Result FsMitmService::OpenDataStorageByDataId(Out<std::shared_ptr<IStorageInterf
     FsStorageId storage_id = (FsStorageId)sid;
     FsStorage data_storage;
     FsFile data_file;
+    
+    if (!this->should_override_contents) {
+        return RESULT_FORWARD_TO_SESSION;
+    }
         
     std::shared_ptr<IStorageInterface> storage = nullptr;
     u32 out_domain_id = 0;
diff --git a/stratosphere/fs_mitm/source/fsmitm_service.hpp b/stratosphere/fs_mitm/source/fsmitm_service.hpp
index 33516ccba..3d4c6e3f1 100644
--- a/stratosphere/fs_mitm/source/fsmitm_service.hpp
+++ b/stratosphere/fs_mitm/source/fsmitm_service.hpp
@@ -30,9 +30,10 @@ enum FspSrvCmd : u32 {
 class FsMitmService : public IMitmServiceObject {
     private:
         bool has_initialized = false;
+        bool should_override_contents;
     public:
-        FsMitmService(std::shared_ptr<Service> s) : IMitmServiceObject(s) {
-            /* ... */
+        FsMitmService(std::shared_ptr<Service> s, u64 pid) : IMitmServiceObject(s, pid) {
+            this->should_override_contents = !Utils::HasSdDisableMitMFlag(this->title_id) && Utils::HasOverrideButton(this->title_id);
         }
         
         static bool ShouldMitm(u64 pid, u64 tid) {
@@ -40,12 +41,8 @@ class FsMitmService : public IMitmServiceObject {
             if (tid == 0x010000000000001FULL) {
                 return true;
             }
-            
-            if (Utils::HasSdDisableMitMFlag(tid)) {
-                return false;
-            }
-            
-            return (tid >= 0x0100000000010000ULL || Utils::HasSdMitMFlag(tid)) && Utils::HasOverrideButton(tid);
+                        
+            return (tid >= 0x0100000000010000ULL || Utils::HasSdMitMFlag(tid));
         }
         
         static void PostProcess(IMitmServiceObject *obj, IpcResponseContext *ctx);
diff --git a/stratosphere/libstratosphere b/stratosphere/libstratosphere
index 8fcac73ab..0bec72ca3 160000
--- a/stratosphere/libstratosphere
+++ b/stratosphere/libstratosphere
@@ -1 +1 @@
-Subproject commit 8fcac73ab2b91afe184abe48c887ea1cb9bf2076
+Subproject commit 0bec72ca36084e9780a8c28abd4a0b24c03c18af
diff --git a/stratosphere/set_mitm/source/setsys_mitm_service.hpp b/stratosphere/set_mitm/source/setsys_mitm_service.hpp
index 2e3da205f..65a172175 100644
--- a/stratosphere/set_mitm/source/setsys_mitm_service.hpp
+++ b/stratosphere/set_mitm/source/setsys_mitm_service.hpp
@@ -25,7 +25,7 @@ enum SetSysCmd : u32 {
 
 class SetSysMitmService : public IMitmServiceObject {      
     public:
-        SetSysMitmService(std::shared_ptr<Service> s) : IMitmServiceObject(s) {
+        SetSysMitmService(std::shared_ptr<Service> s, u64 pid) : IMitmServiceObject(s, pid) {
             /* ... */
         }