diff --git a/Core/HLE/sceAudio.cpp b/Core/HLE/sceAudio.cpp
index e2ad72349c..0db8521442 100644
--- a/Core/HLE/sceAudio.cpp
+++ b/Core/HLE/sceAudio.cpp
@@ -261,7 +261,7 @@ void sceAudioOutput2OutputBlocking()
 	int vol = PARAM(0);
 	u32 dataPtr = PARAM(1);
 
-  ERROR_LOG(HLE,"UNIMPL sceAudioOutput2OutputBlocking(%i, %08x)", vol, dataPtr);
+  WARN_LOG(HLE,"FAKE sceAudioOutput2OutputBlocking(%i, %08x)", vol, dataPtr);
 	chans[0].running = true;
 	chans[0].leftVolume = vol;
 	chans[0].rightVolume = vol;
diff --git a/Core/HLE/sceIo.cpp b/Core/HLE/sceIo.cpp
index 0e0023dd4c..a4c8ab551a 100644
--- a/Core/HLE/sceIo.cpp
+++ b/Core/HLE/sceIo.cpp
@@ -602,10 +602,27 @@ void sceIoDevctl() //(const char *name, int cmd, void *arg, size_t arglen, void
 				}
 				return;
 			}
-		case 0x02425823:  // Check if valid
-			if (Memory::IsValidAddress(outPtr))
-				Memory::Write_U32(1, outPtr);	 // TODO: Make a headless mode for running tests!
+
+		case 0x02415823:  // Set FAT as enabled
+			if (Memory::IsValidAddress(argAddr) && argLen == 4) {
+				MemoryStick_SetFatState((MemStickFatState)Memory::Read_U32(argAddr));
+				RETURN(0);
+			} else {
+				ERROR_LOG(HLE, "Failed 0x02415823 fat");
+				RETURN(-1);
+			}
 			break;
+
+		case 0x02425823:  // Check if FAT enabled
+			if (Memory::IsValidAddress(outPtr) && outLen == 4) {
+				Memory::Write_U32(MemoryStick_FatState(), outPtr);
+				RETURN(0);
+			} else {
+				ERROR_LOG(HLE, "Failed 0x02425823 fat");
+				RETURN(-1);
+			}
+			break;
+
 		case 0x02425818:  // Get memstick size etc
 			// Pretend we have a 2GB memory stick.
 			{
diff --git a/Core/HLE/sceKernelSemaphore.cpp b/Core/HLE/sceKernelSemaphore.cpp
index 161ff6efb8..11d71ceaf6 100644
--- a/Core/HLE/sceKernelSemaphore.cpp
+++ b/Core/HLE/sceKernelSemaphore.cpp
@@ -148,13 +148,13 @@ retry:
 				break;
 			}
 		}
+		// RETURN(0);
 		//pop the thread that were released from waiting
 
 		// I don't think we should reschedule here
 		//if (wokeThreads)
 		//	__KernelReSchedule("semaphore signalled");
 
-		RETURN(0);
 	}
 	else
 	{
diff --git a/Core/HW/MemoryStick.cpp b/Core/HW/MemoryStick.cpp
index 105a63a7ab..4d83e4783c 100644
--- a/Core/HW/MemoryStick.cpp
+++ b/Core/HW/MemoryStick.cpp
@@ -22,4 +22,9 @@ u64 MemoryStick_SectorSize()
 u64 MemoryStick_FreeSpace()
 {
 	return 1ULL * 1024 * 1024 * 1024; // 1GB
-}
\ No newline at end of file
+}
+
+void MemoryStick_SetFatState(MemStickFatState state)
+{
+	memStickFatState = state;
+}
diff --git a/Core/HW/MemoryStick.h b/Core/HW/MemoryStick.h
index 199a24521a..1ccd9b64fa 100644
--- a/Core/HW/MemoryStick.h
+++ b/Core/HW/MemoryStick.h
@@ -17,5 +17,7 @@ enum MemStickFatState {
 MemStickState MemoryStick_State();
 MemStickFatState MemoryStick_FatState();
 
+void MemoryStick_SetFatState(MemStickFatState state);
+
 u64 MemoryStick_SectorSize();
 u64 MemoryStick_FreeSpace();
\ No newline at end of file