diff --git a/Core/HLE/HLETables.cpp b/Core/HLE/HLETables.cpp
index 53143d0c6a..c5a8646832 100644
--- a/Core/HLE/HLETables.cpp
+++ b/Core/HLE/HLETables.cpp
@@ -85,6 +85,7 @@ const HLEFunction UtilsForUser[] =
 	{0xB435DEC5, sceKernelDcacheWritebackInvalidateAll, "sceKernelDcacheWritebackInvalidateAll"},
 	{0x3EE30821, sceKernelDcacheWritebackRange, "sceKernelDcacheWritebackRange"},
 	{0x34B9FA9E, sceKernelDcacheWritebackInvalidateRange, "sceKernelDcacheWritebackInvalidateRange"},
+	{0xC2DF770E, 0, "sceKernelIcacheInvalidateRange"},
 	{0x80001C4C, 0, "sceKernelDcacheProbe"},
 	{0x16641D70, 0, "sceKernelDcacheReadTag"},
 	{0x4FD31C9D, 0, "sceKernelIcacheProbe"},
diff --git a/Core/HLE/sceKernel.cpp b/Core/HLE/sceKernel.cpp
index 8f160946eb..48997885dc 100644
--- a/Core/HLE/sceKernel.cpp
+++ b/Core/HLE/sceKernel.cpp
@@ -344,7 +344,6 @@ const HLEFunction ThreadManForUser[] =
 	{0x6b30100f,&WrapU_UU<sceKernelUnlockMutex>,"sceKernelUnlockMutex"},
 	{0xb7d098c6,&WrapU_CUU<sceKernelCreateMutex>,"sceKernelCreateMutex"},
 	{0x0DDCD2C9, 0, "sceKernelTryLockMutex"},
-
 	// NOTE: LockLwMutex and UnlockLwMutex are in Kernel_Library, see sceKernelInterrupt.cpp.
 
 	{0xFCCFAD26,sceKernelCancelWakeupThread,"sceKernelCancelWakeupThread"},
diff --git a/Core/HLE/sceKernelInterrupt.cpp b/Core/HLE/sceKernelInterrupt.cpp
index c994951d2e..de3cef99bb 100644
--- a/Core/HLE/sceKernelInterrupt.cpp
+++ b/Core/HLE/sceKernelInterrupt.cpp
@@ -427,6 +427,7 @@ const HLEFunction Kernel_Library[] =
 	{0xb55249d2,sceKernelIsCpuIntrEnable, "sceKernelIsCpuIntrEnable"}, 
 	{0xa089eca4,sceKernelMemset, "sceKernelMemset"}, 
 	{0xDC692EE3,0, "sceKernelTryLockLwMutex"},
+	{0x37431849,0, "sceKernelTryLockLwMutex_600"},
 	{0xbea46419,0, "sceKernelLockLwMutex"}, 
 	{0x1FC64E09,0, "sceKernelLockLwMutexCB"},
 	{0x15b6446b,0, "sceKernelUnlockLwMutex"}, 
diff --git a/Core/HLE/sceUtility.cpp b/Core/HLE/sceUtility.cpp
index c1d6c9f276..7dec4ae316 100644
--- a/Core/HLE/sceUtility.cpp
+++ b/Core/HLE/sceUtility.cpp
@@ -567,6 +567,7 @@ const HLEFunction sceUtility[] =
   {0x32E32DCB, 0, "sceUtilityGamedataInstallShutdownStart"},
   {0x4AECD179, 0, "sceUtilityGamedataInstallUpdate"},
   {0xB57E95D9, 0, "sceUtilityGamedataInstallGetStatus"},
+	{0x180F7B62, 0, "sceUtilityGamedataInstallAbortFunction"},
 };
 
 void Register_sceUtility()
diff --git a/Core/MIPS/MIPSIntVFPU.cpp b/Core/MIPS/MIPSIntVFPU.cpp
index 15f5168493..89ca31ca4c 100644
--- a/Core/MIPS/MIPSIntVFPU.cpp
+++ b/Core/MIPS/MIPSIntVFPU.cpp
@@ -488,46 +488,49 @@ namespace MIPSInt
 		EatPrefixes();
 	}
 
-  void Int_Vocp(u32 op)
-  {
-    float s[4], d[4];
-    int vd = _VD;
-    int vs = _VS;
-    VectorSize sz = GetVecSize(op);
-    ReadVector(s, sz, vs);
-    ApplySwizzleS(s, sz);
-    for (int i = 0; i < GetNumVectorElements(sz); i++)
-    {
-      d[i] = 1.0f - s[i]; //vocp
-    }
-    ApplyPrefixD(d, sz);
-    WriteVector(d, sz, vd);
-    PC += 4;
-    EatPrefixes();
-  }
+	void Int_Vocp(u32 op)
+	{
+		float s[4], d[4];
+		int vd = _VD;
+		int vs = _VS;
+		VectorSize sz = GetVecSize(op);
+		ReadVector(s, sz, vs);
+		ApplySwizzleS(s, sz);
+		for (int i = 0; i < GetNumVectorElements(sz); i++)
+		{
+			d[i] = 1.0f - s[i];
+		}
+		ApplyPrefixD(d, sz);
+		WriteVector(d, sz, vd);
+		PC += 4;
+		EatPrefixes();
+	}
 
-  void Int_Vsgn(u32 op)
-  {
-    float s[4], d[4];
-    int vd = _VD;
-    int vs = _VS;
-    VectorSize sz = GetVecSize(op);
-    ReadVector(s, sz, vs);
-    ApplySwizzleS(s, sz);
-    for (int i = 0; i < GetNumVectorElements(sz); i++)
-    {
-			if (s[i] > 0.0f)
-				d[i] = 1.0f;
-			else if (s[i] < 0.0f)
-				d[i] = -1.0f;
-			else
+	void Int_Vsgn(u32 op)
+	{
+		float s[4], d[4];
+		int vd = _VD;
+		int vs = _VS;
+		VectorSize sz = GetVecSize(op);
+		ReadVector(s, sz, vs);
+		ApplySwizzleS(s, sz);
+		for (int i = 0; i < GetNumVectorElements(sz); i++)
+		{
+			// To handle NaNs correctly, we do this with integer hackery
+			u32 val;
+			memcpy(&val, &s[i], sizeof(u32));
+			if (val == 0 || val == 0x80000000)
 				d[i] = 0.0f;
-    }
-    ApplyPrefixD(d, sz);
-    WriteVector(d, sz, vd);
-    PC += 4;
-    EatPrefixes();
-  }
+			else if ((val >> 31) == 0)
+				d[i] = 1.0f;
+			else
+				d[i] = -1.0f;
+		}
+		ApplyPrefixD(d, sz);
+		WriteVector(d, sz, vd);
+		PC += 4;
+		EatPrefixes();
+	}
 
 	void Int_Vf2i(u32 op)
 	{
@@ -581,7 +584,6 @@ namespace MIPSInt
 	void Int_Vh2f(u32 op)
 	{
 		_dbg_assert_msg_(CPU,0,"Trying to interpret instruction that can't be interpreted");
-
 		/*
 		int s[4];
 		float d[4];
@@ -607,6 +609,7 @@ namespace MIPSInt
 	void Int_Vf2h(u32 op)
 	{
 		_dbg_assert_msg_(CPU,0,"Trying to interpret instruction that can't be interpreted");
+		// See http://stackoverflow.com/questions/1659440/32-bit-to-16-bit-floating-point-conversion
 
 		/*
 		int s[4];
@@ -630,11 +633,6 @@ namespace MIPSInt
 		EatPrefixes();
 	}
 
-	u32 replicate3(u32 low) {
-		low &= 0xFF;
-		return low | (low << 8) | (low << 16);
-	}
-
 	void Int_Vx2i(u32 op)
 	{
 		int s[4];
diff --git a/Core/PSPLoaders.cpp b/Core/PSPLoaders.cpp
index bada1d5c79..49750d3fbc 100644
--- a/Core/PSPLoaders.cpp
+++ b/Core/PSPLoaders.cpp
@@ -65,6 +65,10 @@ bool Load_PSP_ISO(const char *filename, std::string *error_string)
 	pspFileSystem.Mount("DISC0:", umd2);
 
 	std::string bootpath("disc0:/PSP_GAME/SYSDIR/EBOOT.BIN");
+	// bypass patchers
+	if (pspFileSystem.GetFileInfo("disc0:/PSP_GAME/SYSDIR/EBOOT.OLD").exists) {
+		bootpath = "disc0:/PSP_GAME/SYSDIR/EBOOT.OLD";
+	}
 	bool hasEncrypted = false;
 	u32 fd;
 	if ((fd = pspFileSystem.OpenFile(bootpath, FILEACCESS_READ)) != 0)
diff --git a/pspautotests b/pspautotests
index 871e721dec..cb8c23e174 160000
--- a/pspautotests
+++ b/pspautotests
@@ -1 +1 @@
-Subproject commit 871e721dece5acd3c631e0a30226b6482a00362d
+Subproject commit cb8c23e1748d9e98ebb21797d8449d8711f04439